122112979 has 2 divisors, whose sum is σ = 122112980. Its totient is φ = 122112978.

The previous prime is 122112973. The next prime is 122113087. The reversal of 122112979 is 979211221.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (979211221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122112979 is a prime.

It is equal to p_6955144 and since 122112979 and 6955144 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (122112973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61056489 + 61056490.

It is an arithmetic number, because the mean of its divisors is an integer number (61056490).

Almost surely, 2^122112979 is an apocalyptic number.

122112979 is a deficient number, since it is larger than the sum of its proper divisors (1).

122112979 is an equidigital number, since it uses as much as digits as its factorization.

122112979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 34.

The square root of 122112979 is about 11050.4741527230. The cubic root of 122112979 is about 496.1206172905.

The spelling of 122112979 in words is "one hundred twenty-two million, one hundred twelve thousand, nine hundred seventy-nine".