122391229 has 2 divisors, whose sum is σ = 122391230. Its totient is φ = 122391228.

The previous prime is 122391187. The next prime is 122391233. The reversal of 122391229 is 922193221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77528025 + 44863204 = 8805^2 + 6698^2 .

It is a cyclic number.

It is not a de Polignac number, because 122391229 - 2¹¹ = 122389181 is a prime.

It is a super-2 number, since 2×122391229² = 29959225872260882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122391229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122391259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61195614 + 61195615.

It is an arithmetic number, because the mean of its divisors is an integer number (61195615).

Almost surely, 2^122391229 is an apocalyptic number.

It is an amenable number.

122391229 is a deficient number, since it is larger than the sum of its proper divisors (1).

122391229 is an equidigital number, since it uses as much as digits as its factorization.

122391229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 31.

The square root of 122391229 is about 11063.0569464321. The cubic root of 122391229 is about 496.4971561426.

The spelling of 122391229 in words is "one hundred twenty-two million, three hundred ninety-one thousand, two hundred twenty-nine".