20222210012221 has 4 divisors (see below), whose sum is σ = 23111097156832. Its totient is φ = 17333322867612.

The previous prime is 20222210012189. The next prime is 20222210012227. The reversal of 20222210012221 is 12221001222202.

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 20222210012221 - 2⁵ = 20222210012189 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 (20222210012227) 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, 1444443572295 + ... + 1444443572308.

It is an arithmetic number, because the mean of its divisors is an integer number (5777774289208).

Almost surely, 2^{20222210012221} is an apocalyptic number.

It is an amenable number.

20222210012221 is a deficient number, since it is larger than the sum of its proper divisors (2888887144611).

20222210012221 is an equidigital number, since it uses as much as digits as its factorization.

20222210012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888887144610.

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

Adding to 20222210012221 its reverse (12221001222202), we get a palindrome (32443211234423).

The spelling of 20222210012221 in words is "twenty trillion, two hundred twenty-two billion, two hundred ten million, twelve thousand, two hundred twenty-one".