113195021 has 2 divisors, whose sum is σ = 113195022. Its totient is φ = 113195020.

The previous prime is 113195003. The next prime is 113195039. The reversal of 113195021 is 120591311.

It is a balanced prime because it is at equal distance from previous prime (113195003) and next prime (113195039).

It can be written as a sum of positive squares in only one way, i.e., 106894921 + 6300100 = 10339^2 + 2510^2 .

It is an emirp because it is prime and its reverse (120591311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113195021 - 2⁶ = 113194957 is a prime.

It is a super-2 number, since 2×113195021² = 25626225558380882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113195051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56597510 + 56597511.

It is an arithmetic number, because the mean of its divisors is an integer number (56597511).

Almost surely, 2^113195021 is an apocalyptic number.

It is an amenable number.

113195021 is a deficient number, since it is larger than the sum of its proper divisors (1).

113195021 is an equidigital number, since it uses as much as digits as its factorization.

113195021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 113195021 is about 10639.3148745584. The cubic root of 113195021 is about 483.7367785893.

The spelling of 113195021 in words is "one hundred thirteen million, one hundred ninety-five thousand, twenty-one".