21332155123312 has 120 divisors (see below), whose sum is σ = 45909666350240. Its totient is φ = 9594299404800.

The previous prime is 21332155123271. The next prime is 21332155123339.

21332155123312 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 23 ways as a sum of consecutive naturals, for example, 154611637 + ... + 154749547.

Almost surely, 2^{21332155123312} is an apocalyptic number.

21332155123312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21332155123312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22954833175120).

21332155123312 is an abundant number, since it is smaller than the sum of its proper divisors (24577511226928).

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

21332155123312 is a wasteful number, since it uses less digits than its factorization.

21332155123312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138783 (or 138766 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

It can be divided in two parts, 2133215 and 5123312, that added together give a palindrome (7256527).

The spelling of 21332155123312 in words is "twenty-one trillion, three hundred thirty-two billion, one hundred fifty-five million, one hundred twenty-three thousand, three hundred twelve".