21232331113 has 16 divisors (see below), whose sum is σ = 25798300416. Its totient is φ = 17079416640.

The previous prime is 21232331077. The next prime is 21232331137. The reversal of 21232331113 is 31113323212.

It is a cyclic number.

It is not a de Polignac number, because 21232331113 - 2³³ = 12642396521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21232331143) 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, 1235598 + ... + 1252663.

It is an arithmetic number, because the mean of its divisors is an integer number (1612393776).

Almost surely, 2^21232331113 is an apocalyptic number.

21232331113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21232331113 is a deficient number, since it is larger than the sum of its proper divisors (4565969303).

21232331113 is a wasteful number, since it uses less digits than its factorization.

21232331113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2488344.

The product of its digits is 648, while the sum is 22.

Adding to 21232331113 its reverse (31113323212), we get a palindrome (52345654325).

The spelling of 21232331113 in words is "twenty-one billion, two hundred thirty-two million, three hundred thirty-one thousand, one hundred thirteen".