120880621 has 4 divisors (see below), whose sum is σ = 120908700. Its totient is φ = 120852544.

The previous prime is 120880607. The next prime is 120880631. The reversal of 120880621 is 126088021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 978121 + 119902500 = 989^2 + 10950^2 .

It is a cyclic number.

It is not a de Polignac number, because 120880621 - 2¹⁷ = 120749549 is a prime.

It is a super-2 number, since 2×120880621² = 29224249066691282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120880621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120880631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6076 + ... + 16693.

It is an arithmetic number, because the mean of its divisors is an integer number (30227175).

Almost surely, 2^120880621 is an apocalyptic number.

It is an amenable number.

120880621 is a deficient number, since it is larger than the sum of its proper divisors (28079).

120880621 is an equidigital number, since it uses as much as digits as its factorization.

120880621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28078.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 120880621 is about 10994.5723427517. The cubic root of 120880621 is about 494.4460299275.

The spelling of 120880621 in words is "one hundred twenty million, eight hundred eighty thousand, six hundred twenty-one".