100120211660 has 48 divisors (see below), whose sum is σ = 244361214720. Its totient is φ = 33745114560.

The previous prime is 100120211623. The next prime is 100120211671. The reversal of 100120211660 is 66112021001.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 6052286 + ... + 6068805.

It is an arithmetic number, because the mean of its divisors is an integer number (5090858640).

Almost surely, 2^100120211660 is an apocalyptic number.

100120211660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100120211660 is an abundant number, since it is smaller than the sum of its proper divisors (144241003060).

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

100120211660 is a wasteful number, since it uses less digits than its factorization.

100120211660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12121166 (or 12121164 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 100120211660 its reverse (66112021001), we get a palindrome (166232232661).

The spelling of 100120211660 in words is "one hundred billion, one hundred twenty million, two hundred eleven thousand, six hundred sixty".