2115335021 has 8 divisors (see below), whose sum is σ = 2145916224. Its totient is φ = 2084775840.

The previous prime is 2115334979. The next prime is 2115335069. The reversal of 2115335021 is 1205335112.

It is a happy number.

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

It is not a de Polignac number, because 2115335021 - 2²⁶ = 2048226157 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 (2115338021) 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 7 ways as a sum of consecutive naturals, for example, 360110 + ... + 365936.

It is an arithmetic number, because the mean of its divisors is an integer number (268239528).

Almost surely, 2^2115335021 is an apocalyptic number.

It is an amenable number.

2115335021 is a deficient number, since it is larger than the sum of its proper divisors (30581203).

2115335021 is an equidigital number, since it uses as much as digits as its factorization.

2115335021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11011.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 2115335021 is about 45992.7713994275. The cubic root of 2115335021 is about 1283.6887047699.

Subtracting from 2115335021 its reverse (1205335112), we obtain a palindrome (909999909).

The spelling of 2115335021 in words is "two billion, one hundred fifteen million, three hundred thirty-five thousand, twenty-one".