2231222031312 has 40 divisors (see below), whose sum is σ = 5764154749056. Its totient is φ = 743719451136.

The previous prime is 2231222031251. The next prime is 2231222031317. The reversal of 2231222031312 is 2131302221322.

2231222031312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×2231222031312³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231222031317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1083513 + ... + 2374119.

Almost surely, 2^{2231222031312} is an apocalyptic number.

It is an amenable number.

2231222031312 is an abundant number, since it is smaller than the sum of its proper divisors (3532932717744).

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

2231222031312 is a wasteful number, since it uses less digits than its factorization.

2231222031312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326635 (or 1326629 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 2231222031312 its reverse (2131302221322), we get a palindrome (4362524252634).

The spelling of 2231222031312 in words is "two trillion, two hundred thirty-one billion, two hundred twenty-two million, thirty-one thousand, three hundred twelve".