2115291001 has 16 divisors (see below), whose sum is σ = 2230968960. Its totient is φ = 2002775040.

The previous prime is 2115290963. The next prime is 2115291007. The reversal of 2115291001 is 1001925112.

It is a cyclic number.

It is not a de Polignac number, because 2115291001 - 2²³ = 2106902393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2115291007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394726 + ... + 400048.

It is an arithmetic number, because the mean of its divisors is an integer number (139435560).

Almost surely, 2^2115291001 is an apocalyptic number.

It is an amenable number.

2115291001 is a deficient number, since it is larger than the sum of its proper divisors (115677959).

2115291001 is a wasteful number, since it uses less digits than its factorization.

2115291001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5616.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 2115291001 is about 45992.2928434754. The cubic root of 2115291001 is about 1283.6798002121.

The spelling of 2115291001 in words is "two billion, one hundred fifteen million, two hundred ninety-one thousand, one".