1056213220113 has 6 divisors (see below), whose sum is σ = 1525641317954. Its totient is φ = 704142146736.

The previous prime is 1056213220093. The next prime is 1056213220129. The reversal of 1056213220113 is 3110223126501.

1056213220113 is a `hidden beast` number, since 1 + 0 + 5 + 621 + 3 + 2 + 20 + 1 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 844840399104 + 211372821009 = 919152^2 + 459753^2 .

It is not a de Polignac number, because 1056213220113 - 2²⁰ = 1056212171537 is a prime.

It is a super-2 number, since 2×1056213220113² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1056213220193) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58678512220 + ... + 58678512237.

Almost surely, 2^{1056213220113} is an apocalyptic number.

It is an amenable number.

1056213220113 is a deficient number, since it is larger than the sum of its proper divisors (469428097841).

1056213220113 is a wasteful number, since it uses less digits than its factorization.

1056213220113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117357024463 (or 117357024460 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 1056213220113 its reverse (3110223126501), we get a palindrome (4166436346614).

The spelling of 1056213220113 in words is "one trillion, fifty-six billion, two hundred thirteen million, two hundred twenty thousand, one hundred thirteen".