111713021 has 16 divisors (see below), whose sum is σ = 130289280. Its totient is φ = 93804480.

The previous prime is 111713009. The next prime is 111713039. The reversal of 111713021 is 120317111.

It is not a de Polignac number, because 111713021 - 2⁶ = 111712957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111713051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169190 + ... + 169848.

It is an arithmetic number, because the mean of its divisors is an integer number (8143080).

Almost surely, 2^111713021 is an apocalyptic number.

It is an amenable number.

111713021 is a deficient number, since it is larger than the sum of its proper divisors (18576259).

111713021 is an equidigital number, since it uses as much as digits as its factorization.

111713021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124.

The product of its (nonzero) digits is 42, while the sum is 17.

The square root of 111713021 is about 10569.4380645330. The cubic root of 111713021 is about 481.6163981868.

The spelling of 111713021 in words is "one hundred eleven million, seven hundred thirteen thousand, twenty-one".