21232703113 has 4 divisors (see below), whose sum is σ = 21261909760. Its totient is φ = 21203496468.

The previous prime is 21232703081. The next prime is 21232703119. The reversal of 21232703113 is 31130723212.

It is a happy number.

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 21232703113 - 2⁵ = 21232703081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21232703119) 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, 14602233 + ... + 14603686.

It is an arithmetic number, because the mean of its divisors is an integer number (5315477440).

Almost surely, 2^21232703113 is an apocalyptic number.

It is an amenable number.

21232703113 is a deficient number, since it is larger than the sum of its proper divisors (29206647).

21232703113 is an equidigital number, since it uses as much as digits as its factorization.

21232703113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29206646.

The product of its (nonzero) digits is 1512, while the sum is 25.

The spelling of 21232703113 in words is "twenty-one billion, two hundred thirty-two million, seven hundred three thousand, one hundred thirteen".