216055622100 has 72 divisors (see below), whose sum is σ = 652300125120. Its totient is φ = 55109838080.

The previous prime is 216055622099. The next prime is 216055622113. The reversal of 216055622100 is 1226550612.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15649305 + ... + 15663104.

It is an arithmetic number, because the mean of its divisors is an integer number (9059723960).

Almost surely, 2^216055622100 is an apocalyptic number.

216055622100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216055622100 is an abundant number, since it is smaller than the sum of its proper divisors (436244503020).

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

216055622100 is a wasteful number, since it uses less digits than its factorization.

216055622100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31312449 (or 31312442 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 216055622100 in words is "two hundred sixteen billion, fifty-five million, six hundred twenty-two thousand, one hundred".