122099977 has 2 divisors, whose sum is σ = 122099978. Its totient is φ = 122099976.

The previous prime is 122099953. The next prime is 122099983. The reversal of 122099977 is 779990221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67502656 + 54597321 = 8216^2 + 7389^2 .

It is a cyclic number.

It is not a de Polignac number, because 122099977 - 2¹¹ = 122097929 is a prime.

It is not a weakly prime, because it can be changed into another prime (122099177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61049988 + 61049989.

It is an arithmetic number, because the mean of its divisors is an integer number (61049989).

Almost surely, 2^122099977 is an apocalyptic number.

It is an amenable number.

122099977 is a deficient number, since it is larger than the sum of its proper divisors (1).

122099977 is an equidigital number, since it uses as much as digits as its factorization.

122099977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 122099977 is about 11049.8858365143. The cubic root of 122099977 is about 496.1030084901.

The spelling of 122099977 in words is "one hundred twenty-two million, ninety-nine thousand, nine hundred seventy-seven".