123081121 has 2 divisors, whose sum is σ = 123081122. Its totient is φ = 123081120.

The previous prime is 123081089. The next prime is 123081143. The reversal of 123081121 is 121180321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122766400 + 314721 = 11080^2 + 561^2 .

It is a cyclic number.

It is not a de Polignac number, because 123081121 - 2⁵ = 123081089 is a prime.

It is not a weakly prime, because it can be changed into another prime (123081151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61540560 + 61540561.

It is an arithmetic number, because the mean of its divisors is an integer number (61540561).

Almost surely, 2^123081121 is an apocalyptic number.

It is an amenable number.

123081121 is a deficient number, since it is larger than the sum of its proper divisors (1).

123081121 is an equidigital number, since it uses as much as digits as its factorization.

123081121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 123081121 is about 11094.1931207276. The cubic root of 123081121 is about 497.4282899596.

The spelling of 123081121 in words is "one hundred twenty-three million, eighty-one thousand, one hundred twenty-one".