12221001220112 has 20 divisors (see below), whose sum is σ = 23748451565436. Its totient is φ = 6092368558080.

The previous prime is 12221001220111. The next prime is 12221001220123. The reversal of 12221001220112 is 21102210012221.

It can be written as a sum of positive squares in 2 ways, for example, as 1144591860736 + 11076409359376 = 1069856^2 + 3328124^2 .

It is not an unprimeable number, because it can be changed into a prime (12221001220111) 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, 1133247689 + ... + 1133258472.

Almost surely, 2^{12221001220112} is an apocalyptic number.

It is an amenable number.

12221001220112 is a deficient number, since it is larger than the sum of its proper divisors (11527450345324).

12221001220112 is a wasteful number, since it uses less digits than its factorization.

12221001220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266506506 (or 2266506500 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12221001220112 its reverse (21102210012221), we get a palindrome (33323211232333).

The spelling of 12221001220112 in words is "twelve trillion, two hundred twenty-one billion, one million, two hundred twenty thousand, one hundred twelve".