116108021 has 4 divisors (see below), whose sum is σ = 116136492. Its totient is φ = 116079552.

The previous prime is 116108009. The next prime is 116108029. The reversal of 116108021 is 120801611.

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 37075921 + 79032100 = 6089^2 + 8890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116108021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 116107984 and 116108002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116108029) 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, 6836 + ... + 16701.

It is an arithmetic number, because the mean of its divisors is an integer number (29034123).

Almost surely, 2^116108021 is an apocalyptic number.

It is an amenable number.

116108021 is a deficient number, since it is larger than the sum of its proper divisors (28471).

116108021 is an equidigital number, since it uses as much as digits as its factorization.

116108021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28470.

The product of its (nonzero) digits is 96, while the sum is 20.

The square root of 116108021 is about 10775.3431963905. The cubic root of 116108021 is about 487.8512337114.

Adding to 116108021 its reverse (120801611), we get a palindrome (236909632).

The spelling of 116108021 in words is "one hundred sixteen million, one hundred eight thousand, twenty-one".