2115123300 has 72 divisors (see below), whose sum is σ = 6799738400. Its totient is φ = 564032160.

The previous prime is 2115123287. The next prime is 2115123317. The reversal of 2115123300 is 33215112.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 388990 + ... + 394389.

Almost surely, 2^2115123300 is an apocalyptic number.

2115123300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115123300 is an abundant number, since it is smaller than the sum of its proper divisors (4684615100).

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

2115123300 is a wasteful number, since it uses less digits than its factorization.

2115123300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783402 (or 783389 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2115123300 is about 45990.4696649208. The cubic root of 2115123300 is about 1283.6458757898.

Adding to 2115123300 its reverse (33215112), we get a palindrome (2148338412).

The spelling of 2115123300 in words is "two billion, one hundred fifteen million, one hundred twenty-three thousand, three hundred".