122222252989 has 2 divisors, whose sum is σ = 122222252990. Its totient is φ = 122222252988.

The previous prime is 122222252969. The next prime is 122222253071. The reversal of 122222252989 is 989252222221.

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., 120155823225 + 2066429764 = 346635^2 + 45458^2 .

It is a cyclic number.

It is not a de Polignac number, because 122222252989 - 2⁷ = 122222252861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122222252909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61111126494 + 61111126495.

It is an arithmetic number, because the mean of its divisors is an integer number (61111126495).

Almost surely, 2^122222252989 is an apocalyptic number.

It is an amenable number.

122222252989 is a deficient number, since it is larger than the sum of its proper divisors (1).

122222252989 is an equidigital number, since it uses as much as digits as its factorization.

122222252989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 46.

The spelling of 122222252989 in words is "one hundred twenty-two billion, two hundred twenty-two million, two hundred fifty-two thousand, nine hundred eighty-nine".