102220231220 has 24 divisors (see below), whose sum is σ = 217603070664. Its totient is φ = 40327981056.

The previous prime is 102220231219. The next prime is 102220231237. The reversal of 102220231220 is 22132022201.

It can be written as a sum of positive squares in 4 ways, for example, as 31169196304 + 71051034916 = 176548^2 + 266554^2 .

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, 35005469 + ... + 35008388.

It is an arithmetic number, because the mean of its divisors is an integer number (9066794611).

Almost surely, 2^102220231220 is an apocalyptic number.

102220231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102220231220 is an abundant number, since it is smaller than the sum of its proper divisors (115382839444).

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

102220231220 is a wasteful number, since it uses less digits than its factorization.

102220231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70013939 (or 70013937 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 102220231220 its reverse (22132022201), we get a palindrome (124352253421).

The spelling of 102220231220 in words is "one hundred two billion, two hundred twenty million, two hundred thirty-one thousand, two hundred twenty".