12221203223 has 4 divisors (see below), whose sum is σ = 12247945920. Its totient is φ = 12194460528.

The previous prime is 12221203177. The next prime is 12221203243. The reversal of 12221203223 is 32230212221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12221203223 - 2⁸ = 12221202967 is a prime.

It is a super-3 number, since 3×12221203223³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12221203195 and 12221203204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221203243) 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, 13370663 + ... + 13371576.

It is an arithmetic number, because the mean of its divisors is an integer number (3061986480).

Almost surely, 2^12221203223 is an apocalyptic number.

12221203223 is a deficient number, since it is larger than the sum of its proper divisors (26742697).

12221203223 is an equidigital number, since it uses as much as digits as its factorization.

12221203223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26742696.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12221203223 its reverse (32230212221), we get a palindrome (44451415444).

The spelling of 12221203223 in words is "twelve billion, two hundred twenty-one million, two hundred three thousand, two hundred twenty-three".