116115221 has 4 divisors (see below), whose sum is σ = 117848352. Its totient is φ = 114382092.

The previous prime is 116115191. The next prime is 116115229. The reversal of 116115221 is 122511611.

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.

It is a cyclic number.

It is not a de Polignac number, because 116115221 - 2¹⁰ = 116114197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 116115193 and 116115202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116115229) 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, 866465 + ... + 866598.

It is an arithmetic number, because the mean of its divisors is an integer number (29462088).

Almost surely, 2^116115221 is an apocalyptic number.

It is an amenable number.

116115221 is a deficient number, since it is larger than the sum of its proper divisors (1733131).

116115221 is an equidigital number, since it uses as much as digits as its factorization.

116115221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733130.

The product of its digits is 120, while the sum is 20.

The square root of 116115221 is about 10775.6772872985. The cubic root of 116115221 is about 487.8613175863.

Adding to 116115221 its reverse (122511611), we get a palindrome (238626832).

The spelling of 116115221 in words is "one hundred sixteen million, one hundred fifteen thousand, two hundred twenty-one".