12221103212 has 12 divisors (see below), whose sum is σ = 21396114096. Its totient is φ = 6107927760.

The previous prime is 12221103203. The next prime is 12221103233. The reversal of 12221103212 is 21230112221.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 645464 + ... + 664127.

It is an arithmetic number, because the mean of its divisors is an integer number (1783009508).

Almost surely, 2^12221103212 is an apocalyptic number.

It is an amenable number.

12221103212 is a deficient number, since it is larger than the sum of its proper divisors (9175010884).

12221103212 is a wasteful number, since it uses less digits than its factorization.

12221103212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311928 (or 1311926 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12221103212 its reverse (21230112221), we get a palindrome (33451215433).

Subtracting 12221103212 from its reverse (21230112221), we obtain a palindrome (9009009009).

The spelling of 12221103212 in words is "twelve billion, two hundred twenty-one million, one hundred three thousand, two hundred twelve".