1056551107121 has 2 divisors, whose sum is σ = 1056551107122. Its totient is φ = 1056551107120.

The previous prime is 1056551107067. The next prime is 1056551107181. The reversal of 1056551107121 is 1217011556501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 560343570721 + 496207536400 = 748561^2 + 704420^2 .

It is a cyclic number.

It is not a de Polignac number, because 1056551107121 - 2²⁶ = 1056483998257 is a prime.

It is a super-2 number, since 2×1056551107121² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1056551107181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528275553560 + 528275553561.

It is an arithmetic number, because the mean of its divisors is an integer number (528275553561).

Almost surely, 2^{1056551107121} is an apocalyptic number.

It is an amenable number.

1056551107121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056551107121 is an equidigital number, since it uses as much as digits as its factorization.

1056551107121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10500, while the sum is 35.

The spelling of 1056551107121 in words is "one trillion, fifty-six billion, five hundred fifty-one million, one hundred seven thousand, one hundred twenty-one".