22220120210221 has 4 divisors (see below), whose sum is σ = 22220559471744. Its totient is φ = 22219680948700.

The previous prime is 22220120210203. The next prime is 22220120210263. The reversal of 22220120210221 is 12201202102222.

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 22220120210221 - 2¹¹ = 22220120208173 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 (22220120217221) 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, 219554875 + ... + 219656056.

It is an arithmetic number, because the mean of its divisors is an integer number (5555139867936).

Almost surely, 2^{22220120210221} is an apocalyptic number.

It is an amenable number.

22220120210221 is a deficient number, since it is larger than the sum of its proper divisors (439261523).

22220120210221 is an equidigital number, since it uses as much as digits as its factorization.

22220120210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439261522.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22220120210221 its reverse (12201202102222), we get a palindrome (34421322312443).

The spelling of 22220120210221 in words is "twenty-two trillion, two hundred twenty billion, one hundred twenty million, two hundred ten thousand, two hundred twenty-one".