116228021 has 16 divisors (see below), whose sum is σ = 147667968. Its totient is φ = 88992000.

The previous prime is 116228009. The next prime is 116228023. The reversal of 116228021 is 120822611.

It is a cyclic number.

It is not a de Polignac number, because 116228021 - 2⁶ = 116227957 is a prime.

It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 (116228023) 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, 17780 + ... + 23421.

It is an arithmetic number, because the mean of its divisors is an integer number (9229248).

Almost surely, 2^116228021 is an apocalyptic number.

It is an amenable number.

116228021 is a deficient number, since it is larger than the sum of its proper divisors (31439947).

116228021 is a wasteful number, since it uses less digits than its factorization.

116228021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41252.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 116228021 is about 10780.9100265237. The cubic root of 116228021 is about 488.0192438998.

The spelling of 116228021 in words is "one hundred sixteen million, two hundred twenty-eight thousand, twenty-one".