22331321321321 has 4 divisors (see below), whose sum is σ = 22331334092100. Its totient is φ = 22331308550544.

The previous prime is 22331321321233. The next prime is 22331321321339. The reversal of 22331321321321 is 12312312313322.

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 10817922261721 + 11513399059600 = 3289061^2 + 3393140^2 .

It is a cyclic number.

It is not a de Polignac number, because 22331321321321 - 2¹⁴ = 22331321304937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22331321329321) 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, 3248906 + ... + 7430883.

It is an arithmetic number, because the mean of its divisors is an integer number (5582833523025).

Almost surely, 2^{22331321321321} is an apocalyptic number.

It is an amenable number.

22331321321321 is a deficient number, since it is larger than the sum of its proper divisors (12770779).

22331321321321 is a wasteful number, since it uses less digits than its factorization.

22331321321321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12770778.

The product of its digits is 7776, while the sum is 29.

Adding to 22331321321321 its reverse (12312312313322), we get a palindrome (34643633634643).

The spelling of 22331321321321 in words is "twenty-two trillion, three hundred thirty-one billion, three hundred twenty-one million, three hundred twenty-one thousand, three hundred twenty-one".