120989511 has 24 divisors (see below), whose sum is σ = 189189360. Its totient is φ = 76408272.

The previous prime is 120989509. The next prime is 120989567. The reversal of 120989511 is 115989021.

It is not a de Polignac number, because 120989511 - 2¹ = 120989509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120989581) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3541 + ... + 15953.

It is an arithmetic number, because the mean of its divisors is an integer number (7882890).

Almost surely, 2^120989511 is an apocalyptic number.

120989511 is a deficient number, since it is larger than the sum of its proper divisors (68199849).

120989511 is a wasteful number, since it uses less digits than its factorization.

120989511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12460 (or 12435 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

The square root of 120989511 is about 10999.5232169399. The cubic root of 120989511 is about 494.5944520355.

It can be divided in two parts, 12098 and 9511, that added together give a square (21609 = 147²).

The spelling of 120989511 in words is "one hundred twenty million, nine hundred eighty-nine thousand, five hundred eleven".