12221100222223 has 4 divisors (see below), whose sum is σ = 12225594928960. Its totient is φ = 12216605515488.

The previous prime is 12221100222217. The next prime is 12221100222301. The reversal of 12221100222223 is 32222200112221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12221100222223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12221100222194 and 12221100222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221100222323) 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, 2247349290 + ... + 2247354727.

It is an arithmetic number, because the mean of its divisors is an integer number (3056398732240).

Almost surely, 2^{12221100222223} is an apocalyptic number.

12221100222223 is a deficient number, since it is larger than the sum of its proper divisors (4494706737).

12221100222223 is an equidigital number, since it uses as much as digits as its factorization.

12221100222223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4494706736.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 12221100222223 its reverse (32222200112221), we get a palindrome (44443300334444).

The spelling of 12221100222223 in words is "twelve trillion, two hundred twenty-one billion, one hundred million, two hundred twenty-two thousand, two hundred twenty-three".