22223121310321 has 4 divisors (see below), whose sum is σ = 22225842405952. Its totient is φ = 22220400214692.

The previous prime is 22223121310309. The next prime is 22223121310361. The reversal of 22223121310321 is 12301312132222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22223121310321 - 2⁷ = 22223121310193 is a prime.

It is a super-2 number, since 2×22223121310321² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22223121310361) 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, 1360535565 + ... + 1360551898.

It is an arithmetic number, because the mean of its divisors is an integer number (5556460601488).

Almost surely, 2^{22223121310321} is an apocalyptic number.

It is an amenable number.

22223121310321 is a deficient number, since it is larger than the sum of its proper divisors (2721095631).

22223121310321 is an equidigital number, since it uses as much as digits as its factorization.

22223121310321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721095630.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 22223121310321 its reverse (12301312132222), we get a palindrome (34524433442543).

The spelling of 22223121310321 in words is "twenty-two trillion, two hundred twenty-three billion, one hundred twenty-one million, three hundred ten thousand, three hundred twenty-one".