116616121 has 2 divisors, whose sum is σ = 116616122. Its totient is φ = 116616120.

The previous prime is 116616109. The next prime is 116616131. The reversal of 116616121 is 121616611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100100025 + 16516096 = 10005^2 + 4064^2 .

It is an emirp because it is prime and its reverse (121616611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 116616121 - 2⁵ = 116616089 is a prime.

It is not a weakly prime, because it can be changed into another prime (116616131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58308060 + 58308061.

It is an arithmetic number, because the mean of its divisors is an integer number (58308061).

Almost surely, 2^116616121 is an apocalyptic number.

It is an amenable number.

116616121 is a deficient number, since it is larger than the sum of its proper divisors (1).

116616121 is an equidigital number, since it uses as much as digits as its factorization.

116616121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 25.

The square root of 116616121 is about 10798.8944341539. The cubic root of 116616121 is about 488.5618263358.

The spelling of 116616121 in words is "one hundred sixteen million, six hundred sixteen thousand, one hundred twenty-one".