120890860991 has 8 divisors (see below), whose sum is σ = 125064181200. Its totient is φ = 116717852160.

The previous prime is 120890860969. The next prime is 120890860999. The reversal of 120890860991 is 199068098021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120890860991 - 2¹⁰ = 120890859967 is a prime.

It is a super-2 number, since 2×120890860991² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120890860999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936056 + ... + 1057346.

It is an arithmetic number, because the mean of its divisors is an integer number (15633022650).

Almost surely, 2^120890860991 is an apocalyptic number.

120890860991 is a deficient number, since it is larger than the sum of its proper divisors (4173320209).

120890860991 is a wasteful number, since it uses less digits than its factorization.

120890860991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155689.

The product of its (nonzero) digits is 559872, while the sum is 53.

The spelling of 120890860991 in words is "one hundred twenty billion, eight hundred ninety million, eight hundred sixty thousand, nine hundred ninety-one".