20111003033221 has 8 divisors (see below), whose sum is σ = 21001802158080. Its totient is φ = 19221571215792.

The previous prime is 20111003033153. The next prime is 20111003033309. The reversal of 20111003033221 is 12233030011102.

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 20111003033221 - 2²³ = 20110994644613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111003033521) 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, 341796790 + ... + 341855623.

It is an arithmetic number, because the mean of its divisors is an integer number (2625225269760).

Almost surely, 2^{20111003033221} is an apocalyptic number.

It is an amenable number.

20111003033221 is a deficient number, since it is larger than the sum of its proper divisors (890799124859).

20111003033221 is a wasteful number, since it uses less digits than its factorization.

20111003033221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683653715.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20111003033221 its reverse (12233030011102), we get a palindrome (32344033044323).

The spelling of 20111003033221 in words is "twenty trillion, one hundred eleven billion, three million, thirty-three thousand, two hundred twenty-one".