122244989 has 2 divisors, whose sum is σ = 122244990. Its totient is φ = 122244988.

The previous prime is 122244953. The next prime is 122245033. The reversal of 122244989 is 989442221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121925764 + 319225 = 11042^2 + 565^2 .

It is a cyclic number.

It is not a de Polignac number, because 122244989 - 2²⁴ = 105467773 is a prime.

It is a super-2 number, since 2×122244989² = 29887674671220242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122244289) 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, 61122494 + 61122495.

It is an arithmetic number, because the mean of its divisors is an integer number (61122495).

Almost surely, 2^122244989 is an apocalyptic number.

It is an amenable number.

122244989 is a deficient number, since it is larger than the sum of its proper divisors (1).

122244989 is an equidigital number, since it uses as much as digits as its factorization.

122244989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 41.

The square root of 122244989 is about 11056.4455861728. The cubic root of 122244989 is about 496.2993296520.

The spelling of 122244989 in words is "one hundred twenty-two million, two hundred forty-four thousand, nine hundred eighty-nine".