122121239 has 2 divisors, whose sum is σ = 122121240. Its totient is φ = 122121238.

The previous prime is 122121203. The next prime is 122121253. The reversal of 122121239 is 932121221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122121239 - 2⁸ = 122120983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122121269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61060619 + 61060620.

It is an arithmetic number, because the mean of its divisors is an integer number (61060620).

Almost surely, 2^122121239 is an apocalyptic number.

122121239 is a deficient number, since it is larger than the sum of its proper divisors (1).

122121239 is an equidigital number, since it uses as much as digits as its factorization.

122121239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 23.

The square root of 122121239 is about 11050.8478860221. The cubic root of 122121239 is about 496.1318032811.

The spelling of 122121239 in words is "one hundred twenty-two million, one hundred twenty-one thousand, two hundred thirty-nine".