121211100210112 has 56 divisors (see below), whose sum is σ = 268496681346432. Its totient is φ = 53814653356800.

The previous prime is 121211100210073. The next prime is 121211100210149. The reversal of 121211100210112 is 211012001112121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2002002964 + ... + 2002063507.

It is an arithmetic number, because the mean of its divisors is an integer number (4794583595472).

Almost surely, 2^{121211100210112} is an apocalyptic number.

It is an amenable number.

121211100210112 is an abundant number, since it is smaller than the sum of its proper divisors (147285581136320).

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

121211100210112 is a wasteful number, since it uses less digits than its factorization.

121211100210112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004066537 (or 4004066527 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 121211100210112 its reverse (211012001112121), we get a palindrome (332223101322233).

The spelling of 121211100210112 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred million, two hundred ten thousand, one hundred twelve".