122533981 has 2 divisors, whose sum is σ = 122533982. Its totient is φ = 122533980.

The previous prime is 122533967. The next prime is 122533993. The reversal of 122533981 is 189335221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118265625 + 4268356 = 10875^2 + 2066^2 .

It is a cyclic number.

It is not a de Polignac number, because 122533981 - 2¹⁵ = 122501213 is a prime.

It is a super-2 number, since 2×122533981² = 30029152999416722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122533181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61266990 + 61266991.

It is an arithmetic number, because the mean of its divisors is an integer number (61266991).

Almost surely, 2^122533981 is an apocalyptic number.

It is an amenable number.

122533981 is a deficient number, since it is larger than the sum of its proper divisors (1).

122533981 is an equidigital number, since it uses as much as digits as its factorization.

122533981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 34.

The square root of 122533981 is about 11069.5068092485. The cubic root of 122533981 is about 496.6901123015.

The spelling of 122533981 in words is "one hundred twenty-two million, five hundred thirty-three thousand, nine hundred eighty-one".