20222101211221 has 64 divisors (see below), whose sum is σ = 25786891468800. Its totient is φ = 15434389990656.

The previous prime is 20222101211203. The next prime is 20222101211233. The reversal of 20222101211221 is 12211210122202.

It is not a de Polignac number, because 20222101211221 - 2⁷ = 20222101211093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222101211321) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 90952030 + ... + 91174096.

It is an arithmetic number, because the mean of its divisors is an integer number (402920179200).

Almost surely, 2^{20222101211221} is an apocalyptic number.

It is an amenable number.

20222101211221 is a deficient number, since it is larger than the sum of its proper divisors (5564790257579).

20222101211221 is a wasteful number, since it uses less digits than its factorization.

20222101211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222458.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20222101211221 its reverse (12211210122202), we get a palindrome (32433311333423).

The spelling of 20222101211221 in words is "twenty trillion, two hundred twenty-two billion, one hundred one million, two hundred eleven thousand, two hundred twenty-one".