12213220223 has 16 divisors (see below), whose sum is σ = 13135302144. Its totient is φ = 11314047360.

The previous prime is 12213220219. The next prime is 12213220231. The reversal of 12213220223 is 32202231221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12213220223 - 2² = 12213220219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12213220195 and 12213220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213220423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1690088 + ... + 1697298.

It is an arithmetic number, because the mean of its divisors is an integer number (820956384).

Almost surely, 2^12213220223 is an apocalyptic number.

12213220223 is a deficient number, since it is larger than the sum of its proper divisors (922081921).

12213220223 is a wasteful number, since it uses less digits than its factorization.

12213220223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8782.

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

Adding to 12213220223 its reverse (32202231221), we get a palindrome (44415451444).

The spelling of 12213220223 in words is "twelve billion, two hundred thirteen million, two hundred twenty thousand, two hundred twenty-three".