20222202121221 has 8 divisors (see below), whose sum is σ = 27620568751104. Its totient is φ = 13152651786080.

The previous prime is 20222202121217. The next prime is 20222202121259. The reversal of 20222202121221 is 12212120222202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20222202121221 - 2² = 20222202121217 is a prime.

It is a super-2 number, since 2×20222202121221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222202121201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82204073541 + ... + 82204073786.

It is an arithmetic number, because the mean of its divisors is an integer number (3452571093888).

Almost surely, 2^{20222202121221} is an apocalyptic number.

It is an amenable number.

20222202121221 is a deficient number, since it is larger than the sum of its proper divisors (7398366629883).

20222202121221 is a wasteful number, since it uses less digits than its factorization.

20222202121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164408147371.

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

Adding to 20222202121221 its reverse (12212120222202), we get a palindrome (32434322343423).

The spelling of 20222202121221 in words is "twenty trillion, two hundred twenty-two billion, two hundred two million, one hundred twenty-one thousand, two hundred twenty-one".