122129197 has 2 divisors, whose sum is σ = 122129198. Its totient is φ = 122129196.

The previous prime is 122129123. The next prime is 122129209. The reversal of 122129197 is 791921221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76282756 + 45846441 = 8734^2 + 6771^2 .

It is a cyclic number.

It is not a de Polignac number, because 122129197 - 2⁷ = 122129069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122129297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61064598 + 61064599.

It is an arithmetic number, because the mean of its divisors is an integer number (61064599).

Almost surely, 2^122129197 is an apocalyptic number.

It is an amenable number.

122129197 is a deficient number, since it is larger than the sum of its proper divisors (1).

122129197 is an equidigital number, since it uses as much as digits as its factorization.

122129197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 34.

The square root of 122129197 is about 11051.2079430260. The cubic root of 122129197 is about 496.1425798153.

The spelling of 122129197 in words is "one hundred twenty-two million, one hundred twenty-nine thousand, one hundred ninety-seven".