102100221022020 has 96 divisors (see below), whose sum is σ = 315380495203200. Its totient is φ = 24519377648640.

The previous prime is 102100221021941. The next prime is 102100221022043. The reversal of 102100221022020 is 20220122001201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1596281670 + ... + 1596345629.

It is an arithmetic number, because the mean of its divisors is an integer number (3285213491700).

Almost surely, 2^{102100221022020} is an apocalyptic number.

102100221022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102100221022020 is an abundant number, since it is smaller than the sum of its proper divisors (213280274181180).

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

102100221022020 is a wasteful number, since it uses less digits than its factorization.

102100221022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192627365 (or 3192627363 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 102100221022020 its reverse (20220122001201), we get a palindrome (122320343023221).

The spelling of 102100221022020 in words is "one hundred two trillion, one hundred billion, two hundred twenty-one million, twenty-two thousand, twenty".