122111994929 has 2 divisors, whose sum is σ = 122111994930. Its totient is φ = 122111994928.

The previous prime is 122111994913. The next prime is 122111994997. The reversal of 122111994929 is 929499111221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102225354529 + 19886640400 = 319727^2 + 141020^2 .

It is a cyclic number.

It is not a de Polignac number, because 122111994929 - 2⁴ = 122111994913 is a prime.

It is a super-2 number, since 2×122111994929² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122111994029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61055997464 + 61055997465.

It is an arithmetic number, because the mean of its divisors is an integer number (61055997465).

Almost surely, 2^122111994929 is an apocalyptic number.

It is an amenable number.

122111994929 is a deficient number, since it is larger than the sum of its proper divisors (1).

122111994929 is an equidigital number, since it uses as much as digits as its factorization.

122111994929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 50.

The spelling of 122111994929 in words is "one hundred twenty-two billion, one hundred eleven million, nine hundred ninety-four thousand, nine hundred twenty-nine".