2001302331221 has 16 divisors (see below), whose sum is σ = 2058011026176. Its totient is φ = 1944972000000.

The previous prime is 2001302331209. The next prime is 2001302331233. The reversal of 2001302331221 is 1221332031002.

It is an interprime number because it is at equal distance from previous prime (2001302331209) and next prime (2001302331233).

It is a cyclic number.

It is not a de Polignac number, because 2001302331221 - 2¹⁸ = 2001302069077 is a prime.

It is a super-2 number, since 2×2001302331221² (a number of 25 digits) contains 22 as substring.

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 = 2001302331193 and 2001302331202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001302331241) 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, 100000106 + ... + 100020116.

It is an arithmetic number, because the mean of its divisors is an integer number (128625689136).

Almost surely, 2^{2001302331221} is an apocalyptic number.

It is an amenable number.

2001302331221 is a deficient number, since it is larger than the sum of its proper divisors (56708694955).

2001302331221 is a wasteful number, since it uses less digits than its factorization.

2001302331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29324.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2001302331221 its reverse (1221332031002), we get a palindrome (3222634362223).

The spelling of 2001302331221 in words is "two trillion, one billion, three hundred two million, three hundred thirty-one thousand, two hundred twenty-one".