102111102201220 has 96 divisors (see below), whose sum is σ = 253590538844160. Its totient is φ = 33797344158720.

The previous prime is 102111102201203. The next prime is 102111102201223. The reversal of 102111102201220 is 22102201111201.

It is a junction number, because it is equal to n+sod(n) for n = 102111102201194 and 102111102201203.

It is not an unprimeable number, because it can be changed into a prime (102111102201223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26987659 + ... + 30537778.

It is an arithmetic number, because the mean of its divisors is an integer number (2641568112960).

Almost surely, 2^{102111102201220} is an apocalyptic number.

102111102201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102111102201220 is an abundant number, since it is smaller than the sum of its proper divisors (151479436642940).

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

102111102201220 is a wasteful number, since it uses less digits than its factorization.

102111102201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57525893 (or 57525891 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102111102201220 its reverse (22102201111201), we get a palindrome (124213303312421).

The spelling of 102111102201220 in words is "one hundred two trillion, one hundred eleven billion, one hundred two million, two hundred one thousand, two hundred twenty".