116951221 has 2 divisors, whose sum is σ = 116951222. Its totient is φ = 116951220.

The previous prime is 116951209. The next prime is 116951257. The reversal of 116951221 is 122159611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94284100 + 22667121 = 9710^2 + 4761^2 .

It is a cyclic number.

It is not a de Polignac number, because 116951221 - 2²³ = 108562613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 116951221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116151221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58475610 + 58475611.

It is an arithmetic number, because the mean of its divisors is an integer number (58475611).

Almost surely, 2^116951221 is an apocalyptic number.

It is an amenable number.

116951221 is a deficient number, since it is larger than the sum of its proper divisors (1).

116951221 is an equidigital number, since it uses as much as digits as its factorization.

116951221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 28.

The square root of 116951221 is about 10814.3987812546. The cubic root of 116951221 is about 489.0293446090.

The spelling of 116951221 in words is "one hundred sixteen million, nine hundred fifty-one thousand, two hundred twenty-one".