122258889 has 12 divisors (see below), whose sum is σ = 183137136. Its totient is φ = 81505764.

The previous prime is 122258887. The next prime is 122258923. The reversal of 122258889 is 988852221.

It is not a de Polignac number, because 122258889 - 2¹ = 122258887 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (122258887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 251319 + ... + 251804.

It is an arithmetic number, because the mean of its divisors is an integer number (15261428).

Almost surely, 2^122258889 is an apocalyptic number.

It is an amenable number.

122258889 is a deficient number, since it is larger than the sum of its proper divisors (60878247).

122258889 is an frugal number, since it uses more digits than its factorization.

122258889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503138 (or 503126 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The square root of 122258889 is about 11057.0741609162. The cubic root of 122258889 is about 496.3181396915.

The spelling of 122258889 in words is "one hundred twenty-two million, two hundred fifty-eight thousand, eight hundred eighty-nine".