102120331220 has 24 divisors (see below), whose sum is σ = 215575492608. Its totient is φ = 40634266400.

The previous prime is 102120331211. The next prime is 102120331249. The reversal of 102120331220 is 22133021201.

It is a congruent number.

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, 13362716 + ... + 13370355.

It is an arithmetic number, because the mean of its divisors is an integer number (8982312192).

Almost surely, 2^102120331220 is an apocalyptic number.

102120331220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102120331220 is an abundant number, since it is smaller than the sum of its proper divisors (113455161388).

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

102120331220 is a wasteful number, since it uses less digits than its factorization.

102120331220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26733271 (or 26733269 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 102120331220 its reverse (22133021201), we get a palindrome (124253352421).

The spelling of 102120331220 in words is "one hundred two billion, one hundred twenty million, three hundred thirty-one thousand, two hundred twenty".