122189131 has 2 divisors, whose sum is σ = 122189132. Its totient is φ = 122189130.

The previous prime is 122189117. The next prime is 122189147. The reversal of 122189131 is 131981221.

It is a weak prime.

It is an emirp because it is prime and its reverse (131981221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122189131 - 2⁵ = 122189099 is a prime.

It is a super-2 number, since 2×122189131² = 29860367469070322, 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 122189131.

It is not a weakly prime, because it can be changed into another prime (122189231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61094565 + 61094566.

It is an arithmetic number, because the mean of its divisors is an integer number (61094566).

Almost surely, 2^122189131 is an apocalyptic number.

122189131 is a deficient number, since it is larger than the sum of its proper divisors (1).

122189131 is an equidigital number, since it uses as much as digits as its factorization.

122189131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 28.

The square root of 122189131 is about 11053.9192597015. The cubic root of 122189131 is about 496.2237259765.

The spelling of 122189131 in words is "one hundred twenty-two million, one hundred eighty-nine thousand, one hundred thirty-one".