22222122020321 has 4 divisors (see below), whose sum is σ = 22222731600132. Its totient is φ = 22221512440512.

The previous prime is 22222122020221. The next prime is 22222122020353. The reversal of 22222122020321 is 12302022122222.

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 7073679610321 + 15148442410000 = 2659639^2 + 3892100^2 .

It is a cyclic number.

It is not a de Polignac number, because 22222122020321 - 2¹⁰ = 22222122019297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22222122020381) 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, 304735220 + ... + 304808133.

It is an arithmetic number, because the mean of its divisors is an integer number (5555682900033).

Almost surely, 2^{22222122020321} is an apocalyptic number.

It is an amenable number.

22222122020321 is a deficient number, since it is larger than the sum of its proper divisors (609579811).

22222122020321 is an equidigital number, since it uses as much as digits as its factorization.

22222122020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609579810.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 22222122020321 its reverse (12302022122222), we get a palindrome (34524144142543).

The spelling of 22222122020321 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred twenty-two million, twenty thousand, three hundred twenty-one".