12221121223 has 8 divisors (see below), whose sum is σ = 12387067200. Its totient is φ = 12055456608.

The previous prime is 12221121221. The next prime is 12221121239. The reversal of 12221121223 is 32212112221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12221121223 - 2¹ = 12221121221 is a prime.

It is a super-2 number, since 2×12221121223² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12221121223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221121221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17865 + ... + 157357.

It is an arithmetic number, because the mean of its divisors is an integer number (1548383400).

Almost surely, 2^12221121223 is an apocalyptic number.

12221121223 is a deficient number, since it is larger than the sum of its proper divisors (165945977).

12221121223 is a wasteful number, since it uses less digits than its factorization.

12221121223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140681.

The product of its digits is 192, while the sum is 19.

Adding to 12221121223 its reverse (32212112221), we get a palindrome (44433233444).

The spelling of 12221121223 in words is "twelve billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred twenty-three".