21232332113 has 4 divisors (see below), whose sum is σ = 21237688320. Its totient is φ = 21226975908.

The previous prime is 21232332091. The next prime is 21232332131. The reversal of 21232332113 is 31123323212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21232332113 - 2²⁴ = 21215554897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21232332133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2672153 + ... + 2680086.

It is an arithmetic number, because the mean of its divisors is an integer number (5309422080).

Almost surely, 2^21232332113 is an apocalyptic number.

It is an amenable number.

21232332113 is a deficient number, since it is larger than the sum of its proper divisors (5356207).

21232332113 is an equidigital number, since it uses as much as digits as its factorization.

21232332113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356206.

The product of its digits is 1296, while the sum is 23.

Adding to 21232332113 its reverse (31123323212), we get a palindrome (52355655325).

The spelling of 21232332113 in words is "twenty-one billion, two hundred thirty-two million, three hundred thirty-two thousand, one hundred thirteen".