2115607021 has 16 divisors (see below), whose sum is σ = 2336882688. Its totient is φ = 1899298800.

The previous prime is 2115606967. The next prime is 2115607027. The reversal of 2115607021 is 1207065112.

It is a cyclic number.

It is not a de Polignac number, because 2115607021 - 2⁷ = 2115606893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115607027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308136 + ... + 314926.

It is an arithmetic number, because the mean of its divisors is an integer number (146055168).

Almost surely, 2^2115607021 is an apocalyptic number.

It is an amenable number.

2115607021 is a deficient number, since it is larger than the sum of its proper divisors (221275667).

2115607021 is a wasteful number, since it uses less digits than its factorization.

2115607021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7152.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 2115607021 is about 45995.7282907880. The cubic root of 2115607021 is about 1283.7437233776.

The spelling of 2115607021 in words is "two billion, one hundred fifteen million, six hundred seven thousand, twenty-one".