1056371156121 has 32 divisors (see below), whose sum is σ = 1421889131520. Its totient is φ = 697580136000.

The previous prime is 1056371156111. The next prime is 1056371156129. The reversal of 1056371156121 is 1216511736501.

1056371156121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1056371156121 - 2²³ = 1056362767513 is a prime.

It is a super-2 number, since 2×1056371156121² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1056371156121.

It is not an unprimeable number, because it can be changed into a prime (1056371156129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 317895166 + ... + 317898488.

It is an arithmetic number, because the mean of its divisors is an integer number (44434035360).

Almost surely, 2^{1056371156121} is an apocalyptic number.

It is an amenable number.

1056371156121 is a deficient number, since it is larger than the sum of its proper divisors (365517975399).

1056371156121 is a wasteful number, since it uses less digits than its factorization.

1056371156121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5277.

The product of its (nonzero) digits is 37800, while the sum is 39.

The spelling of 1056371156121 in words is "one trillion, fifty-six billion, three hundred seventy-one million, one hundred fifty-six thousand, one hundred twenty-one".