12345220352 has 18 divisors (see below), whose sum is σ = 24642217698. Its totient is φ = 6172610048.

The previous prime is 12345220343. The next prime is 12345220397. The reversal of 12345220352 is 25302254321.

12345220352 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11886232576 + 458987776 = 109024^2 + 21424^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24111503 + ... + 24112014.

Almost surely, 2^12345220352 is an apocalyptic number.

It is an amenable number.

12345220352 is a deficient number, since it is larger than the sum of its proper divisors (12296997346).

12345220352 is an frugal number, since it uses more digits than its factorization.

12345220352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48223533 (or 48223519 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 12345220352 its reverse (25302254321), we get a palindrome (37647474673).

The spelling of 12345220352 in words is "twelve billion, three hundred forty-five million, two hundred twenty thousand, three hundred fifty-two".