102021331320 has 96 divisors (see below), whose sum is σ = 334503702000. Its totient is φ = 26964919296.

The previous prime is 102021331319. The next prime is 102021331327. The reversal of 102021331320 is 23133120201.

102021331320 is a `hidden beast` number, since 10 + 2 + 0 + 2 + 1 + 331 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 102021331293 and 102021331302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021331327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1213270 + ... + 1294629.

Almost surely, 2^102021331320 is an apocalyptic number.

102021331320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102021331320 is an abundant number, since it is smaller than the sum of its proper divisors (232482370680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102021331320 is a wasteful number, since it uses less digits than its factorization.

102021331320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508029 (or 2508022 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 102021331320 its reverse (23133120201), we get a palindrome (125154451521).

The spelling of 102021331320 in words is "one hundred two billion, twenty-one million, three hundred thirty-one thousand, three hundred twenty".