122726881 has 2 divisors, whose sum is σ = 122726882. Its totient is φ = 122726880.

The previous prime is 122726843. The next prime is 122726921. The reversal of 122726881 is 188627221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99600400 + 23126481 = 9980^2 + 4809^2 .

It is a cyclic number.

It is not a de Polignac number, because 122726881 - 2⁹ = 122726369 is a prime.

It is a super-2 number, since 2×122726881² = 30123774639976322, 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 122726881.

It is not a weakly prime, because it can be changed into another prime (122726801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61363440 + 61363441.

It is an arithmetic number, because the mean of its divisors is an integer number (61363441).

Almost surely, 2^122726881 is an apocalyptic number.

It is an amenable number.

122726881 is a deficient number, since it is larger than the sum of its proper divisors (1).

122726881 is an equidigital number, since it uses as much as digits as its factorization.

122726881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 37.

The square root of 122726881 is about 11078.2165080847. The cubic root of 122726881 is about 496.9506149759.

The spelling of 122726881 in words is "one hundred twenty-two million, seven hundred twenty-six thousand, eight hundred eighty-one".