2256155212122 has 24 divisors (see below), whose sum is σ = 5586670049376. Its totient is φ = 644615774856.

The previous prime is 2256155212009. The next prime is 2256155212123. The reversal of 2256155212122 is 2212125516522.

2256155212122 is a `hidden beast` number, since 2 + 2 + 5 + 6 + 1 + 5 + 521 + 2 + 122 = 666.

It is not an unprimeable number, because it can be changed into a prime (2256155212123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8952996748 + ... + 8952996999.

It is an arithmetic number, because the mean of its divisors is an integer number (232777918724).

Almost surely, 2^{2256155212122} is an apocalyptic number.

2256155212122 is an abundant number, since it is smaller than the sum of its proper divisors (3330514837254).

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

2256155212122 is a wasteful number, since it uses less digits than its factorization.

2256155212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17905993762 (or 17905993759 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The spelling of 2256155212122 in words is "two trillion, two hundred fifty-six billion, one hundred fifty-five million, two hundred twelve thousand, one hundred twenty-two".