102012102320 has 40 divisors (see below), whose sum is σ = 238170559680. Its totient is φ = 40634101760.

The previous prime is 102012102319. The next prime is 102012102341. The reversal of 102012102320 is 23201210201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×102012102320² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102012102295 and 102012102304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2648561 + ... + 2686800.

It is an arithmetic number, because the mean of its divisors is an integer number (5954263992).

Almost surely, 2^102012102320 is an apocalyptic number.

102012102320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102012102320 is an abundant number, since it is smaller than the sum of its proper divisors (136158457360).

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

102012102320 is a wasteful number, since it uses less digits than its factorization.

102012102320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5335613 (or 5335607 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 102012102320 its reverse (23201210201), we get a palindrome (125213312521).

The spelling of 102012102320 in words is "one hundred two billion, twelve million, one hundred two thousand, three hundred twenty".