122115977 has 2 divisors, whose sum is σ = 122115978. Its totient is φ = 122115976.

The previous prime is 122115943. The next prime is 122115989. The reversal of 122115977 is 779511221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120538441 + 1577536 = 10979^2 + 1256^2 .

It is a cyclic number.

It is not a de Polignac number, because 122115977 - 2¹² = 122111881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122115937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61057988 + 61057989.

It is an arithmetic number, because the mean of its divisors is an integer number (61057989).

Almost surely, 2^122115977 is an apocalyptic number.

It is an amenable number.

122115977 is a deficient number, since it is larger than the sum of its proper divisors (1).

122115977 is an equidigital number, since it uses as much as digits as its factorization.

122115977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8820, while the sum is 35.

The square root of 122115977 is about 11050.6098021783. The cubic root of 122115977 is about 496.1246773488.

The spelling of 122115977 in words is "one hundred twenty-two million, one hundred fifteen thousand, nine hundred seventy-seven".