22220544222321 has 4 divisors (see below), whose sum is σ = 29627392296432. Its totient is φ = 14813696148212.

The previous prime is 22220544222311. The next prime is 22220544222377. The reversal of 22220544222321 is 12322244502222.

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 22220544222321 - 2¹³ = 22220544214129 is a prime.

It is a super-2 number, since 2×22220544222321² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22220544222311) 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, 3703424037051 + ... + 3703424037056.

It is an arithmetic number, because the mean of its divisors is an integer number (7406848074108).

Almost surely, 2^{22220544222321} is an apocalyptic number.

It is an amenable number.

22220544222321 is a deficient number, since it is larger than the sum of its proper divisors (7406848074111).

22220544222321 is an equidigital number, since it uses as much as digits as its factorization.

22220544222321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7406848074110.

The product of its (nonzero) digits is 61440, while the sum is 33.

Adding to 22220544222321 its reverse (12322244502222), we get a palindrome (34542788724543).

The spelling of 22220544222321 in words is "twenty-two trillion, two hundred twenty billion, five hundred forty-four million, two hundred twenty-two thousand, three hundred twenty-one".