113230021 has 2 divisors, whose sum is σ = 113230022. Its totient is φ = 113230020.

The previous prime is 113229971. The next prime is 113230037. The reversal of 113230021 is 120032311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93993025 + 19236996 = 9695^2 + 4386^2 .

It is a cyclic number.

It is not a de Polignac number, because 113230021 - 2¹⁷ = 113098949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113229983 and 113230010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113230921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56615010 + 56615011.

It is an arithmetic number, because the mean of its divisors is an integer number (56615011).

Almost surely, 2^113230021 is an apocalyptic number.

It is an amenable number.

113230021 is a deficient number, since it is larger than the sum of its proper divisors (1).

113230021 is an equidigital number, since it uses as much as digits as its factorization.

113230021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 113230021 is about 10640.9595901873. The cubic root of 113230021 is about 483.7866307306.

Adding to 113230021 its reverse (120032311), we get a palindrome (233262332).

The spelling of 113230021 in words is "one hundred thirteen million, two hundred thirty thousand, twenty-one".