110021220221021 has 4 divisors (see below), whose sum is σ = 110033144064672. Its totient is φ = 110009296377372.

The previous prime is 110021220221009. The next prime is 110021220221051. The reversal of 110021220221021 is 120122022120011.

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 110021220221021 - 2³⁰ = 110020146479197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110021220221051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5961907985 + ... + 5961926438.

It is an arithmetic number, because the mean of its divisors is an integer number (27508286016168).

Almost surely, 2^{110021220221021} is an apocalyptic number.

It is an amenable number.

110021220221021 is a deficient number, since it is larger than the sum of its proper divisors (11923843651).

110021220221021 is an equidigital number, since it uses as much as digits as its factorization.

110021220221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11923843650.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 110021220221021 its reverse (120122022120011), we get a palindrome (230143242341032).

The spelling of 110021220221021 in words is "one hundred ten trillion, twenty-one billion, two hundred twenty million, two hundred twenty-one thousand, twenty-one".