122113531 has 2 divisors, whose sum is σ = 122113532. Its totient is φ = 122113530.

The previous prime is 122113529. The next prime is 122113547. The reversal of 122113531 is 135311221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122113531 - 2¹ = 122113529 is a prime.

It is a super-2 number, since 2×122113531² = 29823428906575922, which contains 22 as substring.

Together with 122113529, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 122113499 and 122113508.

It is not a weakly prime, because it can be changed into another prime (122113561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61056765 + 61056766.

It is an arithmetic number, because the mean of its divisors is an integer number (61056766).

Almost surely, 2^122113531 is an apocalyptic number.

122113531 is a deficient number, since it is larger than the sum of its proper divisors (1).

122113531 is an equidigital number, since it uses as much as digits as its factorization.

122113531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180, while the sum is 19.

The square root of 122113531 is about 11050.4991289987. The cubic root of 122113531 is about 496.1213648446.

Adding to 122113531 its reverse (135311221), we get a palindrome (257424752).

The spelling of 122113531 in words is "one hundred twenty-two million, one hundred thirteen thousand, five hundred thirty-one".