110110120012021 has 4 divisors (see below), whose sum is σ = 110176571504332. Its totient is φ = 110043668519712.

The previous prime is 110110120011989. The next prime is 110110120012031. The reversal of 110110120012021 is 120210021011011.

It is a happy number.

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 45294111408100 + 64816008603921 = 6730090^2 + 8050839^2 .

It is a cyclic number.

It is not a de Polignac number, because 110110120012021 - 2⁵ = 110110120011989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110110120011992 and 110110120012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110110120012031) 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, 33225743670 + ... + 33225746983.

It is an arithmetic number, because the mean of its divisors is an integer number (27544142876083).

Almost surely, 2^{110110120012021} is an apocalyptic number.

It is an amenable number.

110110120012021 is a deficient number, since it is larger than the sum of its proper divisors (66451492311).

110110120012021 is an equidigital number, since it uses as much as digits as its factorization.

110110120012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66451492310.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 110110120012021 its reverse (120210021011011), we get a palindrome (230320141023032).

The spelling of 110110120012021 in words is "one hundred ten trillion, one hundred ten billion, one hundred twenty million, twelve thousand, twenty-one".