2001223032 has 64 divisors (see below), whose sum is σ = 5304432000. Its totient is φ = 627398784.

The previous prime is 2001222991. The next prime is 2001223057. The reversal of 2001223032 is 2303221002.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 47598 + ... + 79170.

It is an arithmetic number, because the mean of its divisors is an integer number (82881750).

Almost surely, 2^2001223032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001223032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2652216000).

2001223032 is an abundant number, since it is smaller than the sum of its proper divisors (3303208968).

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

2001223032 is a wasteful number, since it uses less digits than its factorization.

2001223032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31740 (or 31736 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2001223032 is about 44735.0313736338. The cubic root of 2001223032 is about 1260.1778181896.

Adding to 2001223032 its reverse (2303221002), we get a palindrome (4304444034).

The spelling of 2001223032 in words is "two billion, one million, two hundred twenty-three thousand, thirty-two".