122163889 has 2 divisors, whose sum is σ = 122163890. Its totient is φ = 122163888.

The previous prime is 122163883. The next prime is 122163913. The reversal of 122163889 is 988361221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120626289 + 1537600 = 10983^2 + 1240^2 .

It is a cyclic number.

It is not a de Polignac number, because 122163889 - 2⁷ = 122163761 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122163883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61081944 + 61081945.

It is an arithmetic number, because the mean of its divisors is an integer number (61081945).

Almost surely, 2^122163889 is an apocalyptic number.

It is an amenable number.

122163889 is a deficient number, since it is larger than the sum of its proper divisors (1).

122163889 is an equidigital number, since it uses as much as digits as its factorization.

122163889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 40.

The square root of 122163889 is about 11052.7774337494. Note that the first 3 decimals coincide. The cubic root of 122163889 is about 496.1895534282.

The spelling of 122163889 in words is "one hundred twenty-two million, one hundred sixty-three thousand, eight hundred eighty-nine".