120123121 has 2 divisors, whose sum is σ = 120123122. Its totient is φ = 120123120.

The previous prime is 120123103. The next prime is 120123167. The reversal of 120123121 is 121321021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120121600 + 1521 = 10960^2 + 39^2 .

It is a cyclic number.

It is not a de Polignac number, because 120123121 - 2¹¹ = 120121073 is a prime.

It is not a weakly prime, because it can be changed into another prime (120123721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60061560 + 60061561.

It is an arithmetic number, because the mean of its divisors is an integer number (60061561).

Almost surely, 2^120123121 is an apocalyptic number.

It is an amenable number.

120123121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120123121 is an equidigital number, since it uses as much as digits as its factorization.

120123121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 120123121 is about 10960.0693884665. The cubic root of 120123121 is about 493.4110474824.

Adding to 120123121 its reverse (121321021), we get a palindrome (241444142).

The spelling of 120123121 in words is "one hundred twenty million, one hundred twenty-three thousand, one hundred twenty-one".