21167102055051 has 6 divisors (see below), whose sum is σ = 30574702968420. Its totient is φ = 14111401370028.

The previous prime is 21167102055007. The next prime is 21167102055053. The reversal of 21167102055051 is 15055020176112.

21167102055051 is a `hidden beast` number, since 2 + 1 + 16 + 71 + 0 + 20 + 550 + 5 + 1 = 666.

It is not a de Polignac number, because 21167102055051 - 2²² = 21167097860747 is a prime.

It is a super-2 number, since 2×21167102055051² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21167102054997 and 21167102055015.

It is not an unprimeable number, because it can be changed into a prime (21167102055053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1175950114161 + ... + 1175950114178.

It is an arithmetic number, because the mean of its divisors is an integer number (5095783828070).

Almost surely, 2^{21167102055051} is an apocalyptic number.

21167102055051 is a deficient number, since it is larger than the sum of its proper divisors (9407600913369).

21167102055051 is a wasteful number, since it uses less digits than its factorization.

21167102055051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351900228345 (or 2351900228342 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 36.

The spelling of 21167102055051 in words is "twenty-one trillion, one hundred sixty-seven billion, one hundred two million, fifty-five thousand, fifty-one".