21132322013 has 16 divisors (see below), whose sum is σ = 23445676800. Its totient is φ = 18886433280.

The previous prime is 21132322009. The next prime is 21132322037. The reversal of 21132322013 is 31022323112.

It is not a de Polignac number, because 21132322013 - 2² = 21132322009 is a prime.

It is a super-2 number, since 2×21132322013² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132321013) 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, 150293 + ... + 254661.

It is an arithmetic number, because the mean of its divisors is an integer number (1465354800).

Almost surely, 2^21132322013 is an apocalyptic number.

It is an amenable number.

21132322013 is a deficient number, since it is larger than the sum of its proper divisors (2313354787).

21132322013 is a wasteful number, since it uses less digits than its factorization.

21132322013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104692.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21132322013 its reverse (31022323112), we get a palindrome (52154645125).

The spelling of 21132322013 in words is "twenty-one billion, one hundred thirty-two million, three hundred twenty-two thousand, thirteen".