120988121 has 2 divisors, whose sum is σ = 120988122. Its totient is φ = 120988120.

The previous prime is 120988103. The next prime is 120988123. The reversal of 120988121 is 121889021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113209600 + 7778521 = 10640^2 + 2789^2 .

It is a cyclic number.

It is not a de Polignac number, because 120988121 - 2²⁶ = 53879257 is a prime.

It is a super-2 number, since 2×120988121² = 29276250846221282, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 120988123, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (120988123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60494060 + 60494061.

It is an arithmetic number, because the mean of its divisors is an integer number (60494061).

Almost surely, 2^120988121 is an apocalyptic number.

It is an amenable number.

120988121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120988121 is an equidigital number, since it uses as much as digits as its factorization.

120988121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 120988121 is about 10999.4600322016. The cubic root of 120988121 is about 494.5925579625.

The spelling of 120988121 in words is "one hundred twenty million, nine hundred eighty-eight thousand, one hundred twenty-one".