2001223332221 has 8 divisors (see below), whose sum is σ = 2002239792000. Its totient is φ = 2000207031840.

The previous prime is 2001223332167. The next prime is 2001223332271. The reversal of 2001223332221 is 1222333221002.

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 2001223332221 - 2²² = 2001219137917 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 (2001223332271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31043180 + ... + 31107578.

It is an arithmetic number, because the mean of its divisors is an integer number (250279974000).

Almost surely, 2^{2001223332221} is an apocalyptic number.

It is an amenable number.

2001223332221 is a deficient number, since it is larger than the sum of its proper divisors (1016459779).

2001223332221 is a wasteful number, since it uses less digits than its factorization.

2001223332221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79699.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 2001223332221 its reverse (1222333221002), we get a palindrome (3223556553223).

The spelling of 2001223332221 in words is "two trillion, one billion, two hundred twenty-three million, three hundred thirty-two thousand, two hundred twenty-one".