21232403113 has 16 divisors (see below), whose sum is σ = 23042945664. Its totient is φ = 19490169600.

The previous prime is 21232403077. The next prime is 21232403141. The reversal of 21232403113 is 31130423212.

It is a cyclic number.

It is not a de Polignac number, because 21232403113 - 2³³ = 12642468521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21232403813) 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, 22756 + ... + 207322.

It is an arithmetic number, because the mean of its divisors is an integer number (1440184104).

Almost surely, 2^21232403113 is an apocalyptic number.

It is an amenable number.

21232403113 is a deficient number, since it is larger than the sum of its proper divisors (1810542551).

21232403113 is a wasteful number, since it uses less digits than its factorization.

21232403113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184752.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21232403113 its reverse (31130423212), we get a palindrome (52362826325).

The spelling of 21232403113 in words is "twenty-one billion, two hundred thirty-two million, four hundred three thousand, one hundred thirteen".