120981153 has 16 divisors (see below), whose sum is σ = 163854080. Its totient is φ = 79387776.

The previous prime is 120981121. The next prime is 120981167. The reversal of 120981153 is 351189021.

It is not a de Polignac number, because 120981153 - 2⁵ = 120981121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 120981153.

It is not an unprimeable number, because it can be changed into a prime (120981193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107751 + ... + 108867.

It is an arithmetic number, because the mean of its divisors is an integer number (10240880).

Almost surely, 2^120981153 is an apocalyptic number.

It is an amenable number.

120981153 is a deficient number, since it is larger than the sum of its proper divisors (42872927).

120981153 is a wasteful number, since it uses less digits than its factorization.

120981153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 120981153 is about 10999.1432848200. The cubic root of 120981153 is about 494.5830628509.

The spelling of 120981153 in words is "one hundred twenty million, nine hundred eighty-one thousand, one hundred fifty-three".