113669021 has 4 divisors (see below), whose sum is σ = 120355452. Its totient is φ = 106982592.

The previous prime is 113668993. The next prime is 113669029. The reversal of 113669021 is 120966311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87516025 + 26152996 = 9355^2 + 5114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113669021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113669029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3343190 + ... + 3343223.

It is an arithmetic number, because the mean of its divisors is an integer number (30088863).

Almost surely, 2^113669021 is an apocalyptic number.

It is an amenable number.

113669021 is a deficient number, since it is larger than the sum of its proper divisors (6686431).

113669021 is an equidigital number, since it uses as much as digits as its factorization.

113669021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6686430.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 113669021 is about 10661.5674738755. The cubic root of 113669021 is about 484.4110483112.

The spelling of 113669021 in words is "one hundred thirteen million, six hundred sixty-nine thousand, twenty-one".