122012777 has 2 divisors, whose sum is σ = 122012778. Its totient is φ = 122012776.

The previous prime is 122012753. The next prime is 122012783. The reversal of 122012777 is 777210221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120582361 + 1430416 = 10981^2 + 1196^2 .

It is a cyclic number.

It is not a de Polignac number, because 122012777 - 2⁶ = 122012713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122012977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61006388 + 61006389.

It is an arithmetic number, because the mean of its divisors is an integer number (61006389).

Almost surely, 2^122012777 is an apocalyptic number.

It is an amenable number.

122012777 is a deficient number, since it is larger than the sum of its proper divisors (1).

122012777 is an equidigital number, since it uses as much as digits as its factorization.

122012777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2744, while the sum is 29.

The square root of 122012777 is about 11045.9393896581. The cubic root of 122012777 is about 495.9848799263.

Adding to 122012777 its reverse (777210221), we get a palindrome (899222998).

The spelling of 122012777 in words is "one hundred twenty-two million, twelve thousand, seven hundred seventy-seven".