122266777 has 2 divisors, whose sum is σ = 122266778. Its totient is φ = 122266776.

The previous prime is 122266681. The next prime is 122266783. The reversal of 122266777 is 777662221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71842576 + 50424201 = 8476^2 + 7101^2 .

It is a cyclic number.

It is not a de Polignac number, because 122266777 - 2⁷ = 122266649 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (122260777) 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, 61133388 + 61133389.

It is an arithmetic number, because the mean of its divisors is an integer number (61133389).

Almost surely, 2^122266777 is an apocalyptic number.

It is an amenable number.

122266777 is a deficient number, since it is larger than the sum of its proper divisors (1).

122266777 is an equidigital number, since it uses as much as digits as its factorization.

122266777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 98784, while the sum is 40.

The square root of 122266777 is about 11057.4308498855. The cubic root of 122266777 is about 496.3288134166.

The spelling of 122266777 in words is "one hundred twenty-two million, two hundred sixty-six thousand, seven hundred seventy-seven".