12122321223 has 16 divisors (see below), whose sum is σ = 17227213056. Its totient is φ = 7555785600.

The previous prime is 12122321207. The next prime is 12122321231. The reversal of 12122321223 is 32212322121.

It is not a de Polignac number, because 12122321223 - 2⁴ = 12122321207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12122321223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122321203) 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, 779361 + ... + 794762.

It is an arithmetic number, because the mean of its divisors is an integer number (1076700816).

Almost surely, 2^12122321223 is an apocalyptic number.

12122321223 is a deficient number, since it is larger than the sum of its proper divisors (5104891833).

12122321223 is a wasteful number, since it uses less digits than its factorization.

12122321223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574294.

The product of its digits is 576, while the sum is 21.

Adding to 12122321223 its reverse (32212322121), we get a palindrome (44334643344).

The spelling of 12122321223 in words is "twelve billion, one hundred twenty-two million, three hundred twenty-one thousand, two hundred twenty-three".