2211221131312 has 40 divisors (see below), whose sum is σ = 4446224396640. Its totient is φ = 1064053562880.

The previous prime is 2211221131297. The next prime is 2211221131321. The reversal of 2211221131312 is 2131311221122.

It is a happy number.

It is a super-2 number, since 2×2211221131312² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7517373 + ... + 7805980.

It is an arithmetic number, because the mean of its divisors is an integer number (111155609916).

Almost surely, 2^{2211221131312} is an apocalyptic number.

It is an amenable number.

2211221131312 is an abundant number, since it is smaller than the sum of its proper divisors (2235003265328).

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

2211221131312 is a wasteful number, since it uses less digits than its factorization.

2211221131312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15323701 (or 15323695 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

Adding to 2211221131312 its reverse (2131311221122), we get a palindrome (4342532352434).

The spelling of 2211221131312 in words is "two trillion, two hundred eleven billion, two hundred twenty-one million, one hundred thirty-one thousand, three hundred twelve".