20222202011221 has 24 divisors (see below), whose sum is σ = 23860230004800. Its totient is φ = 17086340178432.

The previous prime is 20222202011203. The next prime is 20222202011279. The reversal of 20222202011221 is 12211020222202.

It is not a de Polignac number, because 20222202011221 - 2¹⁵ = 20222201978453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222202011201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3710961 + ... + 7363126.

It is an arithmetic number, because the mean of its divisors is an integer number (994176250200).

Almost surely, 2^{20222202011221} is an apocalyptic number.

It is an amenable number.

20222202011221 is a deficient number, since it is larger than the sum of its proper divisors (3638027993579).

20222202011221 is a wasteful number, since it uses less digits than its factorization.

20222202011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11074633 (or 11074626 counting only the distinct ones).

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

Adding to 20222202011221 its reverse (12211020222202), we get a palindrome (32433222233423).

The spelling of 20222202011221 in words is "twenty trillion, two hundred twenty-two billion, two hundred two million, eleven thousand, two hundred twenty-one".