20201200203221 has 4 divisors (see below), whose sum is σ = 20289415051500. Its totient is φ = 20112985354944.

The previous prime is 20201200203187. The next prime is 20201200203263. The reversal of 20201200203221 is 12230200210202.

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 19824800775025 + 376399428196 = 4452505^2 + 613514^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201200203221 - 2¹⁴ = 20201200186837 is a prime.

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 20201200203221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201200202221) 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, 44107423796 + ... + 44107424253.

It is an arithmetic number, because the mean of its divisors is an integer number (5072353762875).

Almost surely, 2^{20201200203221} is an apocalyptic number.

It is an amenable number.

20201200203221 is a deficient number, since it is larger than the sum of its proper divisors (88214848279).

20201200203221 is an equidigital number, since it uses as much as digits as its factorization.

20201200203221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88214848278.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20201200203221 its reverse (12230200210202), we get a palindrome (32431400413423).

The spelling of 20201200203221 in words is "twenty trillion, two hundred one billion, two hundred million, two hundred three thousand, two hundred twenty-one".