12321261372 has 48 divisors (see below), whose sum is σ = 33046659072. Its totient is φ = 3500007360.

The previous prime is 12321261367. The next prime is 12321261373. The reversal of 12321261372 is 27316212321.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321261373) 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, 409404 + ... + 438467.

It is an arithmetic number, because the mean of its divisors is an integer number (688472064).

Almost surely, 2^12321261372 is an apocalyptic number.

12321261372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12321261372 is an abundant number, since it is smaller than the sum of its proper divisors (20725397700).

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

12321261372 is a wasteful number, since it uses less digits than its factorization.

12321261372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848058 (or 848056 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

Adding to 12321261372 its reverse (27316212321), we get a palindrome (39637473693).

The spelling of 12321261372 in words is "twelve billion, three hundred twenty-one million, two hundred sixty-one thousand, three hundred seventy-two".