110120000021 has 4 divisors (see below), whose sum is σ = 110122320000. Its totient is φ = 110117680044.

The previous prime is 110119999993. The next prime is 110120000041. The reversal of 110120000021 is 120000021011.

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 a de Polignac number, because none of the positive numbers 2^k-110120000021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110119999963 and 110120000008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110120000041) 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 3 ways as a sum of consecutive naturals, for example, 1087271 + ... + 1184228.

It is an arithmetic number, because the mean of its divisors is an integer number (27530580000).

Almost surely, 2^110120000021 is an apocalyptic number.

It is an amenable number.

110120000021 is a deficient number, since it is larger than the sum of its proper divisors (2319979).

110120000021 is an equidigital number, since it uses as much as digits as its factorization.

110120000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2319978.

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

Adding to 110120000021 its reverse (120000021011), we get a palindrome (230120021032).

The spelling of 110120000021 in words is "one hundred ten billion, one hundred twenty million, twenty-one", and thus it is an aban number.