21325541112051 has 16 divisors (see below), whose sum is σ = 31020955616640. Its totient is φ = 12923742568320.

The previous prime is 21325541112041. The next prime is 21325541112077. The reversal of 21325541112051 is 15021114552312.

It is not a de Polignac number, because 21325541112051 - 2²² = 21325536917747 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (21325541112011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20171830 + ... + 21202683.

It is an arithmetic number, because the mean of its divisors is an integer number (1938809726040).

Almost surely, 2^{21325541112051} is an apocalyptic number.

21325541112051 is a deficient number, since it is larger than the sum of its proper divisors (9695414504589).

21325541112051 is a wasteful number, since it uses less digits than its factorization.

21325541112051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41390146.

The product of its (nonzero) digits is 12000, while the sum is 33.

Adding to 21325541112051 its reverse (15021114552312), we get a palindrome (36346655664363).

The spelling of 21325541112051 in words is "twenty-one trillion, three hundred twenty-five billion, five hundred forty-one million, one hundred twelve thousand, fifty-one".