102220221020 has 24 divisors (see below), whose sum is σ = 215311005168. Its totient is φ = 40764556800.

The previous prime is 102220221011. The next prime is 102220221109. The reversal of 102220221020 is 20122022201.

It is a junction number, because it is equal to n+sod(n) for n = 102220220986 and 102220221004.

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, 7713941 + ... + 7727180.

It is an arithmetic number, because the mean of its divisors is an integer number (8971291882).

Almost surely, 2^102220221020 is an apocalyptic number.

102220221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102220221020 is an abundant number, since it is smaller than the sum of its proper divisors (113090784148).

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

102220221020 is a wasteful number, since it uses less digits than its factorization.

102220221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15441461 (or 15441459 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 102220221020 its reverse (20122022201), we get a palindrome (122342243221).

The spelling of 102220221020 in words is "one hundred two billion, two hundred twenty million, two hundred twenty-one thousand, twenty".