113010021 has 6 divisors (see below), whose sum is σ = 163236710. Its totient is φ = 75340008.

The previous prime is 113009987. The next prime is 113010041. The reversal of 113010021 is 120010311.

It can be written as a sum of positive squares in only one way, i.e., 111830625 + 1179396 = 10575^2 + 1086^2 .

It is not a de Polignac number, because 113010021 - 2⁹ = 113009509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 12556669 = 113010021 / (1 + 1 + 3 + 0 + 1 + 0 + 0 + 2 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 113009985 and 113010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113010041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6278326 + ... + 6278343.

Almost surely, 2^113010021 is an apocalyptic number.

It is an amenable number.

113010021 is a deficient number, since it is larger than the sum of its proper divisors (50226689).

113010021 is a wasteful number, since it uses less digits than its factorization.

113010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12556675 (or 12556672 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 113010021 is about 10630.6171504763. The cubic root of 113010021 is about 483.4731035594.

Adding to 113010021 its reverse (120010311), we get a palindrome (233020332).

The spelling of 113010021 in words is "one hundred thirteen million, ten thousand, twenty-one".