102121333220 has 48 divisors (see below), whose sum is σ = 215949474048. Its totient is φ = 40564022400.

The previous prime is 102121333219. The next prime is 102121333231. The reversal of 102121333220 is 22333121201.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 102121333192 and 102121333201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16344137 + ... + 16350383.

It is an arithmetic number, because the mean of its divisors is an integer number (4498947376).

Almost surely, 2^102121333220 is an apocalyptic number.

102121333220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102121333220 is an abundant number, since it is smaller than the sum of its proper divisors (113828140828).

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

102121333220 is a wasteful number, since it uses less digits than its factorization.

102121333220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11820 (or 11818 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 102121333220 its reverse (22333121201), we get a palindrome (124454454421).

The spelling of 102121333220 in words is "one hundred two billion, one hundred twenty-one million, three hundred thirty-three thousand, two hundred twenty".