1112221

Appears in sequences

• Composite numbers whose prime factors contain no digits other than 0 and 1.at n=12A036928
• Numbers that eventually reach 1 under "x -> sum of 5th power of digits of x".at n=10A219112
• Composite numbers n such that largest digit of all divisors of n is 2.at n=16A221698
• Numbers without a prime factor with a digit larger than 1.at n=19A385345