110220221120021 has 4 divisors (see below), whose sum is σ = 110398282867200. Its totient is φ = 110042159372844.

The previous prime is 110220221119843. The next prime is 110220221120033. The reversal of 110220221120021 is 120021122022011.

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 110220221120021 - 2²⁶ = 110220154011157 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 (110220221122021) 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, 89030872661 + ... + 89030873898.

It is an arithmetic number, because the mean of its divisors is an integer number (27599570716800).

Almost surely, 2^{110220221120021} is an apocalyptic number.

It is an amenable number.

110220221120021 is a deficient number, since it is larger than the sum of its proper divisors (178061747179).

110220221120021 is an equidigital number, since it uses as much as digits as its factorization.

110220221120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178061747178.

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

Adding to 110220221120021 its reverse (120021122022011), we get a palindrome (230241343142032).

The spelling of 110220221120021 in words is "one hundred ten trillion, two hundred twenty billion, two hundred twenty-one million, one hundred twenty thousand, twenty-one".