122222389 has 2 divisors, whose sum is σ = 122222390. Its totient is φ = 122222388.

The previous prime is 122222381. The next prime is 122222407. The reversal of 122222389 is 983222221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78464164 + 43758225 = 8858^2 + 6615^2 .

It is a cyclic number.

It is not a de Polignac number, because 122222389 - 2³ = 122222381 is a prime.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 122222389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122222381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61111194 + 61111195.

It is an arithmetic number, because the mean of its divisors is an integer number (61111195).

Almost surely, 2^122222389 is an apocalyptic number.

It is an amenable number.

122222389 is a deficient number, since it is larger than the sum of its proper divisors (1).

122222389 is an equidigital number, since it uses as much as digits as its factorization.

122222389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 122222389 is about 11055.4235106576. The cubic root of 122222389 is about 496.2687433782.

The spelling of 122222389 in words is "one hundred twenty-two million, two hundred twenty-two thousand, three hundred eighty-nine".