2115135021 has 8 divisors (see below), whose sum is σ = 2820392640. Its totient is φ = 1409983712.

The previous prime is 2115134977. The next prime is 2115135037. The reversal of 2115135021 is 1205315112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2115135021 - 2⁷ = 2115134893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115131021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62545 + ... + 90233.

It is an arithmetic number, because the mean of its divisors is an integer number (352549080).

Almost surely, 2^2115135021 is an apocalyptic number.

It is an amenable number.

2115135021 is a deficient number, since it is larger than the sum of its proper divisors (705257619).

2115135021 is a wasteful number, since it uses less digits than its factorization.

2115135021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53155.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 2115135021 is about 45990.5970933190. The cubic root of 2115135021 is about 1283.6482469023.

The spelling of 2115135021 in words is "two billion, one hundred fifteen million, one hundred thirty-five thousand, twenty-one".