102113232321 has 16 divisors (see below), whose sum is σ = 137919585600. Its totient is φ = 67193837568.

The previous prime is 102113232311. The next prime is 102113232421. The reversal of 102113232321 is 123232311201.

It is a de Polignac number, because none of the positive numbers 2^k-102113232321 is a prime.

It is a super-2 number, since 2×102113232321² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102113232301) 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, 177351 + ... + 485468.

It is an arithmetic number, because the mean of its divisors is an integer number (8619974100).

Almost surely, 2^102113232321 is an apocalyptic number.

It is an amenable number.

102113232321 is a deficient number, since it is larger than the sum of its proper divisors (35806353279).

102113232321 is an equidigital number, since it uses as much as digits as its factorization.

102113232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663488.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 102113232321 its reverse (123232311201), we get a palindrome (225345543522).

The spelling of 102113232321 in words is "one hundred two billion, one hundred thirteen million, two hundred thirty-two thousand, three hundred twenty-one".