102111200220 has 48 divisors (see below), whose sum is σ = 288441568800. Its totient is φ = 26988681216.

The previous prime is 102111200171. The next prime is 102111200291. The reversal of 102111200220 is 22002111201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 102111200196 and 102111200205.

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, 7523545 + ... + 7537104.

It is an arithmetic number, because the mean of its divisors is an integer number (6009199350).

Almost surely, 2^102111200220 is an apocalyptic number.

102111200220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102111200220 is an abundant number, since it is smaller than the sum of its proper divisors (186330368580).

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

102111200220 is a wasteful number, since it uses less digits than its factorization.

102111200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15060774 (or 15060772 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102111200220 its reverse (22002111201), we get a palindrome (124113311421).

The spelling of 102111200220 in words is "one hundred two billion, one hundred eleven million, two hundred thousand, two hundred twenty".