122941561 has 2 divisors, whose sum is σ = 122941562. Its totient is φ = 122941560.

The previous prime is 122941549. The next prime is 122941573. The reversal of 122941561 is 165149221.

It is a balanced prime because it is at equal distance from previous prime (122941549) and next prime (122941573).

It can be written as a sum of positive squares in only one way, i.e., 101606400 + 21335161 = 10080^2 + 4619^2 .

It is a cyclic number.

It is not a de Polignac number, because 122941561 - 2¹¹ = 122939513 is a prime.

It is a super-2 number, since 2×122941561² = 30229254842233442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122941531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61470780 + 61470781.

It is an arithmetic number, because the mean of its divisors is an integer number (61470781).

Almost surely, 2^122941561 is an apocalyptic number.

It is an amenable number.

122941561 is a deficient number, since it is larger than the sum of its proper divisors (1).

122941561 is an equidigital number, since it uses as much as digits as its factorization.

122941561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 31.

The square root of 122941561 is about 11087.9015598083. The cubic root of 122941561 is about 497.2402098092.

The spelling of 122941561 in words is "one hundred twenty-two million, nine hundred forty-one thousand, five hundred sixty-one".