2221322012312 has 64 divisors (see below), whose sum is σ = 4509344196000. Its totient is φ = 1019756242944.

The previous prime is 2221322012281. The next prime is 2221322012317. The reversal of 2221322012312 is 2132102231222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221322012317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17253008 + ... + 17381280.

Almost surely, 2^{2221322012312} is an apocalyptic number.

It is an amenable number.

2221322012312 is an abundant number, since it is smaller than the sum of its proper divisors (2288022183688).

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

2221322012312 is a wasteful number, since it uses less digits than its factorization.

2221322012312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129180 (or 129176 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2221322012312 its reverse (2132102231222), we get a palindrome (4353424243534).

The spelling of 2221322012312 in words is "two trillion, two hundred twenty-one billion, three hundred twenty-two million, twelve thousand, three hundred twelve".