12322121320 has 16 divisors (see below), whose sum is σ = 27724773060. Its totient is φ = 4928848512.

The previous prime is 12322121303. The next prime is 12322121347. The reversal of 12322121320 is 2312122321.

It can be written as a sum of positive squares in 2 ways, for example, as 9918964836 + 2403156484 = 99594^2 + 49022^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154026477 + ... + 154026556.

Almost surely, 2^12322121320 is an apocalyptic number.

12322121320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12322121320 is an abundant number, since it is smaller than the sum of its proper divisors (15402651740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12322121320 is a wasteful number, since it uses less digits than its factorization.

12322121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308053044 (or 308053040 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12322121320 its reverse (2312122321), we get a palindrome (14634243641).

The spelling of 12322121320 in words is "twelve billion, three hundred twenty-two million, one hundred twenty-one thousand, three hundred twenty".