12122113321 has 2 divisors, whose sum is σ = 12122113322. Its totient is φ = 12122113320.

The previous prime is 12122113291. The next prime is 12122113379. The reversal of 12122113321 is 12331122121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9524784025 + 2597329296 = 97595^2 + 50964^2 .

It is a cyclic number.

It is not a de Polignac number, because 12122113321 - 2⁷ = 12122113193 is a prime.

It is not a weakly prime, because it can be changed into another prime (12122113121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061056660 + 6061056661.

It is an arithmetic number, because the mean of its divisors is an integer number (6061056661).

Almost surely, 2^12122113321 is an apocalyptic number.

It is an amenable number.

12122113321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122113321 is an equidigital number, since it uses as much as digits as its factorization.

12122113321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 19.

Adding to 12122113321 its reverse (12331122121), we get a palindrome (24453235442).

The spelling of 12122113321 in words is "twelve billion, one hundred twenty-two million, one hundred thirteen thousand, three hundred twenty-one".