2216138900 has 36 divisors (see below), whose sum is σ = 4880812608. Its totient is φ = 873222240.

The previous prime is 2216138867. The next prime is 2216138923. The reversal of 2216138900 is 98316122.

It is a super-2 number, since 2×2216138900² = 9822543248186420000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158684 + ... + 172083.

It is an arithmetic number, because the mean of its divisors is an integer number (135578128).

Almost surely, 2^2216138900 is an apocalyptic number.

2216138900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2216138900 is an abundant number, since it is smaller than the sum of its proper divisors (2664673708).

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

2216138900 is a wasteful number, since it uses less digits than its factorization.

2216138900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330848 (or 330841 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 2216138900 is about 47075.8844845214. The cubic root of 2216138900 is about 1303.7640220925.

The spelling of 2216138900 in words is "two billion, two hundred sixteen million, one hundred thirty-eight thousand, nine hundred".