2115105100 has 36 divisors (see below), whose sum is σ = 4617298224. Its totient is φ = 840969280.

The previous prime is 2115105067. The next prime is 2115105119. The reversal of 2115105100 is 15015112.

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, 46627 + ... + 80026.

It is an arithmetic number, because the mean of its divisors is an integer number (128258284).

Almost surely, 2^2115105100 is an apocalyptic number.

2115105100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115105100 is an abundant number, since it is smaller than the sum of its proper divisors (2502193124).

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

2115105100 is a wasteful number, since it uses less digits than its factorization.

2115105100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126834 (or 126827 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 2115105100 is about 45990.2717974139. The cubic root of 2115105100 is about 1283.6421939837.

The spelling of 2115105100 in words is "two billion, one hundred fifteen million, one hundred five thousand, one hundred".