12365221112 has 16 divisors (see below), whose sum is σ = 23201103840. Its totient is φ = 6178260096.

The previous prime is 12365221111. The next prime is 12365221139. The reversal of 12365221112 is 21112256321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12365221111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531713 + ... + 554480.

It is an arithmetic number, because the mean of its divisors is an integer number (1450068990).

Almost surely, 2^12365221112 is an apocalyptic number.

It is an amenable number.

12365221112 is a deficient number, since it is larger than the sum of its proper divisors (10835882728).

12365221112 is a wasteful number, since it uses less digits than its factorization.

12365221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087622 (or 1087618 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

Adding to 12365221112 its reverse (21112256321), we get a palindrome (33477477433).

The spelling of 12365221112 in words is "twelve billion, three hundred sixty-five million, two hundred twenty-one thousand, one hundred twelve".