116806021 has 4 divisors (see below), whose sum is σ = 116828352. Its totient is φ = 116783692.

The previous prime is 116805989. The next prime is 116806037. The reversal of 116806021 is 120608611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120608611 = 3119 ⋅38669.

It is a cyclic number.

It is not a de Polignac number, because 116806021 - 2⁵ = 116805989 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 (116806051) 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, 1380 + ... + 15346.

It is an arithmetic number, because the mean of its divisors is an integer number (29207088).

Almost surely, 2^116806021 is an apocalyptic number.

It is an amenable number.

116806021 is a deficient number, since it is larger than the sum of its proper divisors (22331).

116806021 is an equidigital number, since it uses as much as digits as its factorization.

116806021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22330.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 116806021 is about 10807.6834243051. The cubic root of 116806021 is about 488.8268770998.

The spelling of 116806021 in words is "one hundred sixteen million, eight hundred six thousand, twenty-one".