22022212210221 has 4 divisors (see below), whose sum is σ = 29362949613632. Its totient is φ = 14681474806812.

The previous prime is 22022212210171. The next prime is 22022212210267. The reversal of 22022212210221 is 12201221222022.

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 not a de Polignac number, because 22022212210221 - 2¹⁷ = 22022212079149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022212210421) 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, 3670368701701 + ... + 3670368701706.

It is an arithmetic number, because the mean of its divisors is an integer number (7340737403408).

Almost surely, 2^{22022212210221} is an apocalyptic number.

It is an amenable number.

22022212210221 is a deficient number, since it is larger than the sum of its proper divisors (7340737403411).

22022212210221 is an equidigital number, since it uses as much as digits as its factorization.

22022212210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7340737403410.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22022212210221 its reverse (12201221222022), we get a palindrome (34223433432243).

The spelling of 22022212210221 in words is "twenty-two trillion, twenty-two billion, two hundred twelve million, two hundred ten thousand, two hundred twenty-one".