2115321113 has 2 divisors, whose sum is σ = 2115321114. Its totient is φ = 2115321112.

The previous prime is 2115321079. The next prime is 2115321137. The reversal of 2115321113 is 3111235112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2111126809 + 4194304 = 45947^2 + 2048^2 .

It is a cyclic number.

It is not a de Polignac number, because 2115321113 - 2⁶ = 2115321049 is a prime.

It is a super-2 number, since 2×2115321113² = 8949166822207117538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2115321193) 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 as a sum of consecutive naturals, namely, 1057660556 + 1057660557.

It is an arithmetic number, because the mean of its divisors is an integer number (1057660557).

Almost surely, 2^2115321113 is an apocalyptic number.

It is an amenable number.

2115321113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115321113 is an equidigital number, since it uses as much as digits as its factorization.

2115321113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180, while the sum is 20.

The square root of 2115321113 is about 45992.6202015062. The cubic root of 2115321113 is about 1283.6858914123.

Adding to 2115321113 its reverse (3111235112), we get a palindrome (5226556225).

The spelling of 2115321113 in words is "two billion, one hundred fifteen million, three hundred twenty-one thousand, one hundred thirteen".