110112122021221 has 4 divisors (see below), whose sum is σ = 110315656443244. Its totient is φ = 109908587599200.

The previous prime is 110112122021179. The next prime is 110112122021269. The reversal of 110112122021221 is 122120221211011.

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 57908462477121 + 52203659544100 = 7609761^2 + 7225210^2 .

It is a cyclic number.

It is not a de Polignac number, because 110112122021221 - 2²⁹ = 110111585150309 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 (110112122021281) 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, 101767210200 + ... + 101767211281.

It is an arithmetic number, because the mean of its divisors is an integer number (27578914110811).

Almost surely, 2^{110112122021221} is an apocalyptic number.

It is an amenable number.

110112122021221 is a deficient number, since it is larger than the sum of its proper divisors (203534422023).

110112122021221 is an equidigital number, since it uses as much as digits as its factorization.

110112122021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203534422022.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 110112122021221 its reverse (122120221211011), we get a palindrome (232232343232232).

The spelling of 110112122021221 in words is "one hundred ten trillion, one hundred twelve billion, one hundred twenty-two million, twenty-one thousand, two hundred twenty-one".