120110021 has 4 divisors (see below), whose sum is σ = 120185472. Its totient is φ = 120034572.

The previous prime is 120109991. The next prime is 120110057. The reversal of 120110021 is 120011021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120110021 - 2¹⁰ = 120108997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120109990 and 120110008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120116021) 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, 35285 + ... + 38538.

It is an arithmetic number, because the mean of its divisors is an integer number (30046368).

Almost surely, 2^120110021 is an apocalyptic number.

It is an amenable number.

120110021 is a deficient number, since it is larger than the sum of its proper divisors (75451).

120110021 is an equidigital number, since it uses as much as digits as its factorization.

120110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75450.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 120110021 is about 10959.4717482185. The cubic root of 120110021 is about 493.3931105534.

Adding to 120110021 its reverse (120011021), we get a palindrome (240121042).

The spelling of 120110021 in words is "one hundred twenty million, one hundred ten thousand, twenty-one".