20202022201221 has 48 divisors (see below), whose sum is σ = 34291530873600. Its totient is φ = 11218623876864.

The previous prime is 20202022201219. The next prime is 20202022201237. The reversal of 20202022201221 is 12210222020202.

20202022201221 is a `hidden beast` number, since 2 + 0 + 20 + 202 + 220 + 1 + 221 = 666.

It is not a de Polignac number, because 20202022201221 - 2¹ = 20202022201219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20202022201194 and 20202022201203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202022201721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3209176 + ... + 7120593.

It is an arithmetic number, because the mean of its divisors is an integer number (714406893200).

Almost surely, 2^{20202022201221} is an apocalyptic number.

20202022201221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20202022201221 is a deficient number, since it is larger than the sum of its proper divisors (14089508672379).

20202022201221 is a wasteful number, since it uses less digits than its factorization.

20202022201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10330658 (or 10330655 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20202022201221 its reverse (12210222020202), we get a palindrome (32412244221423).

The spelling of 20202022201221 in words is "twenty trillion, two hundred two billion, twenty-two million, two hundred one thousand, two hundred twenty-one".