122651611 has 2 divisors, whose sum is σ = 122651612. Its totient is φ = 122651610.

The previous prime is 122651591. The next prime is 122651621. The reversal of 122651611 is 116156221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122651611 - 2²³ = 114263003 is a prime.

It is not a weakly prime, because it can be changed into another prime (122651621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61325805 + 61325806.

It is an arithmetic number, because the mean of its divisors is an integer number (61325806).

Almost surely, 2^122651611 is an apocalyptic number.

122651611 is a deficient number, since it is larger than the sum of its proper divisors (1).

122651611 is an equidigital number, since it uses as much as digits as its factorization.

122651611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 25.

The square root of 122651611 is about 11074.8187795557. The cubic root of 122651611 is about 496.8489987633.

The spelling of 122651611 in words is "one hundred twenty-two million, six hundred fifty-one thousand, six hundred eleven".