20220012201221 has 48 divisors (see below), whose sum is σ = 23813666622720. Its totient is φ = 17117397964800.

The previous prime is 20220012201211. The next prime is 20220012201241. The reversal of 20220012201221 is 12210221002202.

It is a happy number.

It is not a de Polignac number, because 20220012201221 - 2¹⁰ = 20220012200197 is a prime.

It is a super-2 number, since 2×20220012201221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20220012201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220012201211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3411505760 + ... + 3411511686.

It is an arithmetic number, because the mean of its divisors is an integer number (496118054640).

Almost surely, 2^{20220012201221} is an apocalyptic number.

It is an amenable number.

20220012201221 is a deficient number, since it is larger than the sum of its proper divisors (3593654421499).

20220012201221 is a wasteful number, since it uses less digits than its factorization.

20220012201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8674 (or 8667 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20220012201221 its reverse (12210221002202), we get a palindrome (32430233203423).

The spelling of 20220012201221 in words is "twenty trillion, two hundred twenty billion, twelve million, two hundred one thousand, two hundred twenty-one".