110222120211221 has 4 divisors (see below), whose sum is σ = 110223374519244. Its totient is φ = 110220865903200.

The previous prime is 110222120211211. The next prime is 110222120211223. The reversal of 110222120211221 is 122112021222011.

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 35474233800625 + 74747886410596 = 5956025^2 + 8645686^2 .

It is a cyclic number.

It is not a de Polignac number, because 110222120211221 - 2¹⁰ = 110222120210197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110222120211193 and 110222120211202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110222120211223) 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, 627022190 + ... + 627197951.

It is an arithmetic number, because the mean of its divisors is an integer number (27555843629811).

Almost surely, 2^{110222120211221} is an apocalyptic number.

It is an amenable number.

110222120211221 is a deficient number, since it is larger than the sum of its proper divisors (1254308023).

110222120211221 is an equidigital number, since it uses as much as digits as its factorization.

110222120211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254308022.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 110222120211221 its reverse (122112021222011), we get a palindrome (232334141433232).

The spelling of 110222120211221 in words is "one hundred ten trillion, two hundred twenty-two billion, one hundred twenty million, two hundred eleven thousand, two hundred twenty-one".