102203131220 has 12 divisors (see below), whose sum is σ = 214626575604. Its totient is φ = 40881252480.

The previous prime is 102203131213. The next prime is 102203131243. The reversal of 102203131220 is 22131302201.

It can be written as a sum of positive squares in 2 ways, for example, as 63566511376 + 38636619844 = 252124^2 + 196562^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2555078261 + ... + 2555078300.

It is an arithmetic number, because the mean of its divisors is an integer number (17885547967).

Almost surely, 2^102203131220 is an apocalyptic number.

102203131220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102203131220 is an abundant number, since it is smaller than the sum of its proper divisors (112423444384).

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

102203131220 is a wasteful number, since it uses less digits than its factorization.

102203131220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5110156570 (or 5110156568 counting only the distinct ones).

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

Adding to 102203131220 its reverse (22131302201), we get a palindrome (124334433421).

The spelling of 102203131220 in words is "one hundred two billion, two hundred three million, one hundred thirty-one thousand, two hundred twenty".