121331123202112 has 28 divisors (see below), whose sum is σ = 244713438556396. Its totient is φ = 59671044195840.

The previous prime is 121331123202073. The next prime is 121331123202181. The reversal of 121331123202112 is 211202321133121.

It can be written as a sum of positive squares in 2 ways, for example, as 21698305524736 + 99632817677376 = 4658144^2 + 9981624^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15539330523 + ... + 15539338330.

Almost surely, 2^{121331123202112} is an apocalyptic number.

It is an amenable number.

121331123202112 is an abundant number, since it is smaller than the sum of its proper divisors (123382315354284).

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

121331123202112 is an equidigital number, since it uses as much as digits as its factorization.

121331123202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31078668926 (or 31078668916 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 121331123202112 its reverse (211202321133121), we get a palindrome (332533444335233).

The spelling of 121331123202112 in words is "one hundred twenty-one trillion, three hundred thirty-one billion, one hundred twenty-three million, two hundred two thousand, one hundred twelve".