20221231201 has 4 divisors (see below), whose sum is σ = 20714432004. Its totient is φ = 19728030400.

The previous prime is 20221231193. The next prime is 20221231229. The reversal of 20221231201 is 10213212202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5743366225 + 14477864976 = 75785^2 + 120324^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221231201 - 2³ = 20221231193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221231271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246600340 + ... + 246600421.

It is an arithmetic number, because the mean of its divisors is an integer number (5178608001).

Almost surely, 2^20221231201 is an apocalyptic number.

It is an amenable number.

20221231201 is a deficient number, since it is larger than the sum of its proper divisors (493200803).

20221231201 is an equidigital number, since it uses as much as digits as its factorization.

20221231201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493200802.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20221231201 its reverse (10213212202), we get a palindrome (30434443403).

The spelling of 20221231201 in words is "twenty billion, two hundred twenty-one million, two hundred thirty-one thousand, two hundred one".