102102112100220 has 48 divisors (see below), whose sum is σ = 285908048582688. Its totient is φ = 27225121826560.

The previous prime is 102102112100207. The next prime is 102102112100269. The reversal of 102102112100220 is 22001211201201.

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

It is a self number, because there is not a number n which added to its sum of digits gives 102102112100220.

It is a congruent number.

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, 65095611 + ... + 66645650.

It is an arithmetic number, because the mean of its divisors is an integer number (5956417678806).

Almost surely, 2^{102102112100220} is an apocalyptic number.

102102112100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102102112100220 is an abundant number, since it is smaller than the sum of its proper divisors (183805936482468).

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

102102112100220 is a wasteful number, since it uses less digits than its factorization.

102102112100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131754190 (or 131754188 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102102112100220 its reverse (22001211201201), we get a palindrome (124103323301421).

The spelling of 102102112100220 in words is "one hundred two trillion, one hundred two billion, one hundred twelve million, one hundred thousand, two hundred twenty".