211211121220112 has 60 divisors (see below), whose sum is σ = 447423708835584. Its totient is φ = 96535628092800.

The previous prime is 211211121220097. The next prime is 211211121220123. The reversal of 211211121220112 is 211022121112112.

It is a happy number.

It is a super-2 number, since 2×211211121220112² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 378899264 + ... + 379456287.

Almost surely, 2^{211211121220112} is an apocalyptic number.

It is an amenable number.

211211121220112 is an abundant number, since it is smaller than the sum of its proper divisors (236212587615472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211211121220112 is a wasteful number, since it uses less digits than its factorization.

211211121220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758355688 (or 758355669 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 211211121220112 its reverse (211022121112112), we get a palindrome (422233242332224).

The spelling of 211211121220112 in words is "two hundred eleven trillion, two hundred eleven billion, one hundred twenty-one million, two hundred twenty thousand, one hundred twelve".