120988161 has 20 divisors (see below), whose sum is σ = 206555712. Its totient is φ = 69135768.

The previous prime is 120988159. The next prime is 120988207. The reversal of 120988161 is 161889021.

It is not a de Polignac number, because 120988161 - 2¹ = 120988159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120988121) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 106125 + ... + 107258.

Almost surely, 2^120988161 is an apocalyptic number.

It is an amenable number.

120988161 is a deficient number, since it is larger than the sum of its proper divisors (85567551).

120988161 is an equidigital number, since it uses as much as digits as its factorization.

120988161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213402 (or 213393 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The square root of 120988161 is about 10999.4618504725. The cubic root of 120988161 is about 494.5926124684.

The spelling of 120988161 in words is "one hundred twenty million, nine hundred eighty-eight thousand, one hundred sixty-one".