20201200221 has 16 divisors (see below), whose sum is σ = 27134202368. Its totient is φ = 13368110400.

The previous prime is 20201200207. The next prime is 20201200223. The reversal of 20201200221 is 12200210202.

It is not a de Polignac number, because 20201200221 - 2¹³ = 20201192029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20201200197 and 20201200206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201200223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259380 + ... + 328146.

It is an arithmetic number, because the mean of its divisors is an integer number (1695887648).

Almost surely, 2^20201200221 is an apocalyptic number.

It is an amenable number.

20201200221 is a deficient number, since it is larger than the sum of its proper divisors (6933002147).

20201200221 is a wasteful number, since it uses less digits than its factorization.

20201200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69492.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20201200221 its reverse (12200210202), we get a palindrome (32401410423).

The spelling of 20201200221 in words is "twenty billion, two hundred one million, two hundred thousand, two hundred twenty-one".