122163913 has 2 divisors, whose sum is σ = 122163914. Its totient is φ = 122163912.

The previous prime is 122163889. The next prime is 122163917. The reversal of 122163913 is 319361221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68112009 + 54051904 = 8253^2 + 7352^2 .

It is an emirp because it is prime and its reverse (319361221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122163913 - 2⁹ = 122163401 is a prime.

It is not a weakly prime, because it can be changed into another prime (122163917) 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, 61081956 + 61081957.

It is an arithmetic number, because the mean of its divisors is an integer number (61081957).

Almost surely, 2^122163913 is an apocalyptic number.

It is an amenable number.

122163913 is a deficient number, since it is larger than the sum of its proper divisors (1).

122163913 is an equidigital number, since it uses as much as digits as its factorization.

122163913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 28.

The square root of 122163913 is about 11052.7785194493. The cubic root of 122163913 is about 496.1895859216.

It can be divided in two parts, 12216 and 3913, that added together give a square (16129 = 127²).

The spelling of 122163913 in words is "one hundred twenty-two million, one hundred sixty-three thousand, nine hundred thirteen".