20221231200221 has 8 divisors (see below), whose sum is σ = 21615059438784. Its totient is φ = 18870289984480.

The previous prime is 20221231200197. The next prime is 20221231200241. The reversal of 20221231200221 is 12200213212202.

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 20221231200221 - 2¹⁴ = 20221231183837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20221231200193 and 20221231200202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221231200241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10721754731 + ... + 10721756616.

It is an arithmetic number, because the mean of its divisors is an integer number (2701882429848).

Almost surely, 2^{20221231200221} is an apocalyptic number.

It is an amenable number.

20221231200221 is a deficient number, since it is larger than the sum of its proper divisors (1393828238563).

20221231200221 is a wasteful number, since it uses less digits than its factorization.

20221231200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21443511411.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20221231200221 its reverse (12200213212202), we get a palindrome (32421444412423).

The spelling of 20221231200221 in words is "twenty trillion, two hundred twenty-one billion, two hundred thirty-one million, two hundred thousand, two hundred twenty-one".