20003313221 has 8 divisors (see below), whose sum is σ = 21081535200. Its totient is φ = 18927632880.

The previous prime is 20003313199. The next prime is 20003313229. The reversal of 20003313221 is 12231330002.

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 20003313221 - 2¹⁴ = 20003296837 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 20003313221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003313229) 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, 619235 + ... + 650736.

It is an arithmetic number, because the mean of its divisors is an integer number (2635191900).

Almost surely, 2^20003313221 is an apocalyptic number.

It is an amenable number.

20003313221 is a deficient number, since it is larger than the sum of its proper divisors (1078221979).

20003313221 is a wasteful number, since it uses less digits than its factorization.

20003313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270819.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20003313221 its reverse (12231330002), we get a palindrome (32234643223).

The spelling of 20003313221 in words is "twenty billion, three million, three hundred thirteen thousand, two hundred twenty-one".