2115355121 has 8 divisors (see below), whose sum is σ = 2308573344. Its totient is φ = 1922289120.

The previous prime is 2115355093. The next prime is 2115355127. The reversal of 2115355121 is 1215535112.

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 2115355121 - 2²² = 2111160817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2115355127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7955 + ... + 65528.

It is an arithmetic number, because the mean of its divisors is an integer number (288571668).

Almost surely, 2^2115355121 is an apocalyptic number.

It is an amenable number.

2115355121 is a deficient number, since it is larger than the sum of its proper divisors (193218223).

2115355121 is a wasteful number, since it uses less digits than its factorization.

2115355121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76111.

The product of its digits is 1500, while the sum is 26.

The square root of 2115355121 is about 45992.9899115072. The cubic root of 2115355121 is about 1283.6927706445.

Subtracting from 2115355121 its reverse (1215535112), we obtain a square (899820009 = 29997²).

The spelling of 2115355121 in words is "two billion, one hundred fifteen million, three hundred fifty-five thousand, one hundred twenty-one".