122259257889 has 8 divisors (see below), whose sum is σ = 163078430880. Its totient is φ = 81473128416.

The previous prime is 122259257873. The next prime is 122259257893. The reversal of 122259257889 is 988752952221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122259257889 - 2⁴ = 122259257873 is a prime.

It is a super-2 number, since 2×122259257889² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122259257389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8252244 + ... + 8267045.

It is an arithmetic number, because the mean of its divisors is an integer number (20384803860).

Almost surely, 2^122259257889 is an apocalyptic number.

It is an amenable number.

122259257889 is a deficient number, since it is larger than the sum of its proper divisors (40819172991).

122259257889 is a wasteful number, since it uses less digits than its factorization.

122259257889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16521759.

The product of its digits is 14515200, while the sum is 60.

The spelling of 122259257889 in words is "one hundred twenty-two billion, two hundred fifty-nine million, two hundred fifty-seven thousand, eight hundred eighty-nine".