102320112021 has 16 divisors (see below), whose sum is σ = 141353991744. Its totient is φ = 65782450944.

The previous prime is 102320111977. The next prime is 102320112043. The reversal of 102320112021 is 120211023201.

It is a de Polignac number, because none of the positive numbers 2^k-102320112021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102320110021) 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, 4066231 + ... + 4091316.

It is an arithmetic number, because the mean of its divisors is an integer number (8834624484).

Almost surely, 2^102320112021 is an apocalyptic number.

It is an amenable number.

102320112021 is a deficient number, since it is larger than the sum of its proper divisors (39033879723).

102320112021 is a wasteful number, since it uses less digits than its factorization.

102320112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8157700.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 102320112021 its reverse (120211023201), we get a palindrome (222531135222).

It can be divided in two parts, 1023201 and 12021, that multiplied together give a palindrome (12299899221).

The spelling of 102320112021 in words is "one hundred two billion, three hundred twenty million, one hundred twelve thousand, twenty-one".