122365531 has 2 divisors, whose sum is σ = 122365532. Its totient is φ = 122365530.

The previous prime is 122365519. The next prime is 122365559. The reversal of 122365531 is 135563221.

It is an a-pointer prime, because the next prime (122365559) can be obtained adding 122365531 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122365531 - 2¹⁷ = 122234459 is a prime.

It is a super-2 number, since 2×122365531² = 29946646353823922, 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 122365531.

It is not a weakly prime, because it can be changed into another prime (122365501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61182765 + 61182766.

It is an arithmetic number, because the mean of its divisors is an integer number (61182766).

Almost surely, 2^122365531 is an apocalyptic number.

122365531 is a deficient number, since it is larger than the sum of its proper divisors (1).

122365531 is an equidigital number, since it uses as much as digits as its factorization.

122365531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 28.

The square root of 122365531 is about 11061.8954524078. The cubic root of 122365531 is about 496.4624045320.

The spelling of 122365531 in words is "one hundred twenty-two million, three hundred sixty-five thousand, five hundred thirty-one".