12320212572 has 36 divisors (see below), whose sum is σ = 32147367616. Its totient is φ = 3974261760.

The previous prime is 12320212571. The next prime is 12320212577. The reversal of 12320212572 is 27521202321.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320212571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5518693 + ... + 5520924.

Almost surely, 2^12320212572 is an apocalyptic number.

12320212572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12320212572 is an abundant number, since it is smaller than the sum of its proper divisors (19827155044).

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

12320212572 is a wasteful number, since it uses less digits than its factorization.

12320212572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11039658 (or 11039653 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

Adding to 12320212572 its reverse (27521202321), we get a palindrome (39841414893).

The spelling of 12320212572 in words is "twelve billion, three hundred twenty million, two hundred twelve thousand, five hundred seventy-two".