120998236361 has 2 divisors, whose sum is σ = 120998236362. Its totient is φ = 120998236360.

The previous prime is 120998236349. The next prime is 120998236363. The reversal of 120998236361 is 163632899021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89442266761 + 31555969600 = 299069^2 + 177640^2 .

It is a cyclic number.

It is not a de Polignac number, because 120998236361 - 2⁶ = 120998236297 is a prime.

Together with 120998236363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120998236363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60499118180 + 60499118181.

It is an arithmetic number, because the mean of its divisors is an integer number (60499118181).

Almost surely, 2^120998236361 is an apocalyptic number.

It is an amenable number.

120998236361 is a deficient number, since it is larger than the sum of its proper divisors (1).

120998236361 is an equidigital number, since it uses as much as digits as its factorization.

120998236361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 839808, while the sum is 50.

The spelling of 120998236361 in words is "one hundred twenty billion, nine hundred ninety-eight million, two hundred thirty-six thousand, three hundred sixty-one".