122522989 has 2 divisors, whose sum is σ = 122522990. Its totient is φ = 122522988.

The previous prime is 122522987. The next prime is 122522993. The reversal of 122522989 is 989225221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110565225 + 11957764 = 10515^2 + 3458^2 .

It is a cyclic number.

It is not a de Polignac number, because 122522989 - 2¹ = 122522987 is a prime.

Together with 122522987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122522987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61261494 + 61261495.

It is an arithmetic number, because the mean of its divisors is an integer number (61261495).

Almost surely, 2^122522989 is an apocalyptic number.

It is an amenable number.

122522989 is a deficient number, since it is larger than the sum of its proper divisors (1).

122522989 is an equidigital number, since it uses as much as digits as its factorization.

122522989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 40.

The square root of 122522989 is about 11069.0102990285. The cubic root of 122522989 is about 496.6752598746.

The spelling of 122522989 in words is "one hundred twenty-two million, five hundred twenty-two thousand, nine hundred eighty-nine".