122116531 has 2 divisors, whose sum is σ = 122116532. Its totient is φ = 122116530.

The previous prime is 122116529. The next prime is 122116543. The reversal of 122116531 is 135611221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122116531 - 2¹ = 122116529 is a prime.

It is a super-2 number, since 2×122116531² = 29824894286947922, which contains 22 as substring.

Together with 122116529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (122116031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61058265 + 61058266.

It is an arithmetic number, because the mean of its divisors is an integer number (61058266).

Almost surely, 2^122116531 is an apocalyptic number.

122116531 is a deficient number, since it is larger than the sum of its proper divisors (1).

122116531 is an equidigital number, since it uses as much as digits as its factorization.

122116531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 22.

The square root of 122116531 is about 11050.6348686399. The cubic root of 122116531 is about 496.1254275991.

Adding to 122116531 its reverse (135611221), we get a palindrome (257727752).

The spelling of 122116531 in words is "one hundred twenty-two million, one hundred sixteen thousand, five hundred thirty-one".