21325533552312 has 128 divisors (see below), whose sum is σ = 61583576002560. Its totient is φ = 6081968721920.

The previous prime is 21325533552299. The next prime is 21325533552343.

21325533552312 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254126953 + ... + 254210855.

It is an arithmetic number, because the mean of its divisors is an integer number (481121687520).

Almost surely, 2^{21325533552312} is an apocalyptic number.

21325533552312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21325533552312 is an abundant number, since it is smaller than the sum of its proper divisors (40258042450248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21325533552312 is a wasteful number, since it uses less digits than its factorization.

21325533552312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140573 (or 140569 counting only the distinct ones).

The product of its digits is 810000, while the sum is 42.

It can be divided in two parts, 2132553 and 3552312, that added together give a palindrome (5684865).

The spelling of 21325533552312 in words is "twenty-one trillion, three hundred twenty-five billion, five hundred thirty-three million, five hundred fifty-two thousand, three hundred twelve".