12122343321 has 16 divisors (see below), whose sum is σ = 17670604800. Its totient is φ = 7330997520.

The previous prime is 12122343293. The next prime is 12122343347. The reversal of 12122343321 is 12334322121.

It is not a de Polignac number, because 12122343321 - 2¹⁹ = 12121819033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12122343291 and 12122343300.

It is not an unprimeable number, because it can be changed into a prime (12122343371) 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, 381421 + ... + 411978.

It is an arithmetic number, because the mean of its divisors is an integer number (1104412800).

Almost surely, 2^12122343321 is an apocalyptic number.

12122343321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12122343321 is a deficient number, since it is larger than the sum of its proper divisors (5548261479).

12122343321 is a wasteful number, since it uses less digits than its factorization.

12122343321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793876.

The product of its digits is 1728, while the sum is 24.

Adding to 12122343321 its reverse (12334322121), we get a palindrome (24456665442).

The spelling of 12122343321 in words is "twelve billion, one hundred twenty-two million, three hundred forty-three thousand, three hundred twenty-one".