20001143322221 has 8 divisors (see below), whose sum is σ = 20047972834560. Its totient is φ = 19954319578128.

The previous prime is 20001143322197. The next prime is 20001143322229. The reversal of 20001143322221 is 12222334110002.

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 20001143322221 - 2¹⁸ = 20001143060077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001143322229) 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, 5540495 + ... + 8408291.

It is an arithmetic number, because the mean of its divisors is an integer number (2505996604320).

Almost surely, 2^{20001143322221} is an apocalyptic number.

It is an amenable number.

20001143322221 is a deficient number, since it is larger than the sum of its proper divisors (46829512339).

20001143322221 is a wasteful number, since it uses less digits than its factorization.

20001143322221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2884123.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20001143322221 its reverse (12222334110002), we get a palindrome (32223477432223).

The spelling of 20001143322221 in words is "twenty trillion, one billion, one hundred forty-three million, three hundred twenty-two thousand, two hundred twenty-one".