20221200202221 has 24 divisors (see below), whose sum is σ = 30716815356864. Its totient is φ = 13290929699040.

The previous prime is 20221200202123. The next prime is 20221200202241. The reversal of 20221200202221 is 12220200212202.

20221200202221 is a `hidden beast` number, since 2 + 0 + 221 + 20 + 0 + 202 + 221 = 666.

It is not a de Polignac number, because 20221200202221 - 2¹⁹ = 20221199677933 is a prime.

It is a super-2 number, since 2×20221200202221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20221200202194 and 20221200202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221200202241) 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, 586002576 + ... + 586037081.

It is an arithmetic number, because the mean of its divisors is an integer number (1279867306536).

Almost surely, 2^{20221200202221} is an apocalyptic number.

It is an amenable number.

20221200202221 is a deficient number, since it is larger than the sum of its proper divisors (10495615154643).

20221200202221 is an equidigital number, since it uses as much as digits as its factorization.

20221200202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172039743 (or 1172039731 counting only the distinct ones).

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

Adding to 20221200202221 its reverse (12220200212202), we get a palindrome (32441400414423).

The spelling of 20221200202221 in words is "twenty trillion, two hundred twenty-one billion, two hundred million, two hundred two thousand, two hundred twenty-one".