2001320022 has 64 divisors (see below), whose sum is σ = 4528742400. Its totient is φ = 584985984.

The previous prime is 2001320021. The next prime is 2001320033. The reversal of 2001320022 is 2200231002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001320021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263563 + ... + 271049.

It is an arithmetic number, because the mean of its divisors is an integer number (70761600).

Almost surely, 2^2001320022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001320022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2264371200).

2001320022 is an abundant number, since it is smaller than the sum of its proper divisors (2527422378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001320022 is a wasteful number, since it uses less digits than its factorization.

2001320022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7677.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2001320022 is about 44736.1154102589. The cubic root of 2001320022 is about 1260.1981761857.

Adding to 2001320022 its reverse (2200231002), we get a palindrome (4201551024).

The spelling of 2001320022 in words is "two billion, one million, three hundred twenty thousand, twenty-two".