122655121 has 2 divisors, whose sum is σ = 122655122. Its totient is φ = 122655120.

The previous prime is 122655109. The next prime is 122655133. The reversal of 122655121 is 121556221.

It is a balanced prime because it is at equal distance from previous prime (122655109) and next prime (122655133).

It can be written as a sum of positive squares in only one way, i.e., 69072721 + 53582400 = 8311^2 + 7320^2 .

It is an emirp because it is prime and its reverse (121556221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122655121 is a prime.

It is not a weakly prime, because it can be changed into another prime (122655521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61327560 + 61327561.

It is an arithmetic number, because the mean of its divisors is an integer number (61327561).

Almost surely, 2^122655121 is an apocalyptic number.

It is an amenable number.

122655121 is a deficient number, since it is larger than the sum of its proper divisors (1).

122655121 is an equidigital number, since it uses as much as digits as its factorization.

122655121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 25.

The square root of 122655121 is about 11074.9772460263. The cubic root of 122655121 is about 496.8537382672.

The spelling of 122655121 in words is "one hundred twenty-two million, six hundred fifty-five thousand, one hundred twenty-one".