2312323322221 has 6 divisors (see below), whose sum is σ = 2541644643566. Its totient is φ = 2102112111000.

The previous prime is 2312323322173. The next prime is 2312323322261. The reversal of 2312323322221 is 1222233232132.

It can be written as a sum of positive squares in only one way, i.e., 1163270102500 + 1149053219721 = 1078550^2 + 1071939^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2312323322221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2312323322221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312323322261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9555054930 + ... + 9555055171.

Almost surely, 2^{2312323322221} is an apocalyptic number.

It is an amenable number.

2312323322221 is a deficient number, since it is larger than the sum of its proper divisors (229321321345).

2312323322221 is a wasteful number, since it uses less digits than its factorization.

2312323322221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19110110123 (or 19110110112 counting only the distinct ones).

The product of its digits is 10368, while the sum is 28.

Adding to 2312323322221 its reverse (1222233232132), we get a palindrome (3534556554353).

The spelling of 2312323322221 in words is "two trillion, three hundred twelve billion, three hundred twenty-three million, three hundred twenty-two thousand, two hundred twenty-one".