122135231 has 2 divisors, whose sum is σ = 122135232. Its totient is φ = 122135230.

The previous prime is 122135219. The next prime is 122135243. The reversal of 122135231 is 132531221.

It is a balanced prime because it is at equal distance from previous prime (122135219) and next prime (122135243).

It is a cyclic number.

It is not a de Polignac number, because 122135231 - 2¹⁴ = 122118847 is a prime.

It is a super-2 number, since 2×122135231² = 29834029302846722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122135291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61067615 + 61067616.

It is an arithmetic number, because the mean of its divisors is an integer number (61067616).

Almost surely, 2^122135231 is an apocalyptic number.

122135231 is a deficient number, since it is larger than the sum of its proper divisors (1).

122135231 is an equidigital number, since it uses as much as digits as its factorization.

122135231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 20.

The square root of 122135231 is about 11051.4809414847. The cubic root of 122135231 is about 496.1507506025.

Adding to 122135231 its reverse (132531221), we get a palindrome (254666452).

The spelling of 122135231 in words is "one hundred twenty-two million, one hundred thirty-five thousand, two hundred thirty-one".