21313220311332 has 72 divisors (see below), whose sum is σ = 54177978254400. Its totient is φ = 7064557128000.

The previous prime is 21313220311247. The next prime is 21313220311333. The reversal of 21313220311332 is 23311302231312.

21313220311332 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 322 + 0 + 3 + 1 + 1 + 332 = 666.

It is a super-2 number, since 2×21313220311332² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21313220311296 and 21313220311305.

It is not an unprimeable number, because it can be changed into a prime (21313220311333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3615169 + ... + 7462967.

It is an arithmetic number, because the mean of its divisors is an integer number (752471920200).

Almost surely, 2^{21313220311332} is an apocalyptic number.

It is an amenable number.

21313220311332 is an abundant number, since it is smaller than the sum of its proper divisors (32864757943068).

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

21313220311332 is a wasteful number, since it uses less digits than its factorization.

21313220311332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3848673 (or 3848668 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 21313220311332 its reverse (23311302231312), we get a palindrome (44624522542644).

The spelling of 21313220311332 in words is "twenty-one trillion, three hundred thirteen billion, two hundred twenty million, three hundred eleven thousand, three hundred thirty-two".