113737021 has 24 divisors (see below), whose sum is σ = 130356864. Its totient is φ = 98824320.

The previous prime is 113737007. The next prime is 113737037. The reversal of 113737021 is 120737311.

It is not a de Polignac number, because 113737021 - 2¹⁷ = 113605949 is a prime.

It is a super-2 number, since 2×113737021² = 25872219891908882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113737051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 263676 + ... + 264106.

It is an arithmetic number, because the mean of its divisors is an integer number (5431536).

Almost surely, 2^113737021 is an apocalyptic number.

It is an amenable number.

113737021 is a deficient number, since it is larger than the sum of its proper divisors (16619843).

113737021 is a wasteful number, since it uses less digits than its factorization.

113737021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 25.

The square root of 113737021 is about 10664.7560215881. The cubic root of 113737021 is about 484.5076251523.

The spelling of 113737021 in words is "one hundred thirteen million, seven hundred thirty-seven thousand, twenty-one".