2001322022021 has 8 divisors (see below), whose sum is σ = 2293104927360. Its totient is φ = 1711009056528.

The previous prime is 2001322021997. The next prime is 2001322022033. The reversal of 2001322022021 is 1202202231002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001322022021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001322022321) 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, 367482041 + ... + 367487486.

It is an arithmetic number, because the mean of its divisors is an integer number (286638115920).

Almost surely, 2^{2001322022021} is an apocalyptic number.

It is an amenable number.

2001322022021 is a deficient number, since it is larger than the sum of its proper divisors (291782905339).

2001322022021 is an equidigital number, since it uses as much as digits as its factorization.

2001322022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734969923.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 2001322022021 its reverse (1202202231002), we get a palindrome (3203524253023).

The spelling of 2001322022021 in words is "two trillion, one billion, three hundred twenty-two million, twenty-two thousand, twenty-one".