110222012221 has 4 divisors (see below), whose sum is σ = 110226692700. Its totient is φ = 110217331744.

The previous prime is 110222012191. The next prime is 110222012227. The reversal of 110222012221 is 122210222011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122210222011 = 17981 ⋅6796631.

It can be written as a sum of positive squares in 2 ways, for example, as 68764572900 + 41457439321 = 262230^2 + 203611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110222012221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110222012195 and 110222012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110222012227) 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, 2304736 + ... + 2352073.

It is an arithmetic number, because the mean of its divisors is an integer number (27556673175).

Almost surely, 2^110222012221 is an apocalyptic number.

It is an amenable number.

110222012221 is a deficient number, since it is larger than the sum of its proper divisors (4680479).

110222012221 is an equidigital number, since it uses as much as digits as its factorization.

110222012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680478.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 110222012221 its reverse (122210222011), we get a palindrome (232432234232).

The spelling of 110222012221 in words is "one hundred ten billion, two hundred twenty-two million, twelve thousand, two hundred twenty-one".