102121122210220 has 48 divisors (see below), whose sum is σ = 219116188222848. Its totient is φ = 39961266464000.

The previous prime is 102121122210179. The next prime is 102121122210253. The reversal of 102121122210220 is 22012221121201.

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, 22465531 + ... + 26625970.

It is an arithmetic number, because the mean of its divisors is an integer number (4564920587976).

Almost surely, 2^{102121122210220} is an apocalyptic number.

102121122210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102121122210220 is an abundant number, since it is smaller than the sum of its proper divisors (116995066012628).

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

102121122210220 is a wasteful number, since it uses less digits than its factorization.

102121122210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49093770 (or 49093768 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102121122210220 its reverse (22012221121201), we get a palindrome (124133343331421).

The spelling of 102121122210220 in words is "one hundred two trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred ten thousand, two hundred twenty".