2001022044321 has 8 divisors (see below), whose sum is σ = 2760030406080. Its totient is φ = 1288014189392.

The previous prime is 2001022044277. The next prime is 2001022044323. The reversal of 2001022044321 is 1234402201002.

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 2001022044321 - 2¹⁵ = 2001022011553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001022044323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11500126605 + ... + 11500126778.

It is an arithmetic number, because the mean of its divisors is an integer number (345003800760).

Almost surely, 2^{2001022044321} is an apocalyptic number.

It is an amenable number.

2001022044321 is a deficient number, since it is larger than the sum of its proper divisors (759008361759).

2001022044321 is a wasteful number, since it uses less digits than its factorization.

2001022044321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23000253415.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 2001022044321 its reverse (1234402201002), we get a palindrome (3235424245323).

The spelling of 2001022044321 in words is "two trillion, one billion, twenty-two million, forty-four thousand, three hundred twenty-one".