122356889 has 4 divisors (see below), whose sum is σ = 122569524. Its totient is φ = 122144256.

The previous prime is 122356847. The next prime is 122356901. The reversal of 122356889 is 988653221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89775625 + 32581264 = 9475^2 + 5708^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122356889 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (122356189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105452 + ... + 106605.

It is an arithmetic number, because the mean of its divisors is an integer number (30642381).

Almost surely, 2^122356889 is an apocalyptic number.

It is an amenable number.

122356889 is a deficient number, since it is larger than the sum of its proper divisors (212635).

122356889 is an equidigital number, since it uses as much as digits as its factorization.

122356889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212634.

The product of its digits is 207360, while the sum is 44.

The square root of 122356889 is about 11061.5048252939. The cubic root of 122356889 is about 496.4507167931.

The spelling of 122356889 in words is "one hundred twenty-two million, three hundred fifty-six thousand, eight hundred eighty-nine".