2222312120321 has 4 divisors (see below), whose sum is σ = 2223316330452. Its totient is φ = 2221307910192.

The previous prime is 2222312120317. The next prime is 2222312120393. The reversal of 2222312120321 is 1230212132222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1875697332721 + 346614787600 = 1369561^2 + 588740^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222312120321 - 2² = 2222312120317 is a prime.

It is a super-2 number, since 2×2222312120321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2222312120521) 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, 502101746 + ... + 502106171.

It is an arithmetic number, because the mean of its divisors is an integer number (555829082613).

Almost surely, 2^{2222312120321} is an apocalyptic number.

It is an amenable number.

2222312120321 is a deficient number, since it is larger than the sum of its proper divisors (1004210131).

2222312120321 is a wasteful number, since it uses less digits than its factorization.

2222312120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004210130.

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

Adding to 2222312120321 its reverse (1230212132222), we get a palindrome (3452524252543).

The spelling of 2222312120321 in words is "two trillion, two hundred twenty-two billion, three hundred twelve million, one hundred twenty thousand, three hundred twenty-one".