20001323332 has 24 divisors (see below), whose sum is σ = 37310940800. Its totient is φ = 9354380256.

The previous prime is 20001323263. The next prime is 20001323333. The reversal of 20001323332 is 23332310002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (20001323333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1659663 + ... + 1671670.

Almost surely, 2^20001323332 is an apocalyptic number.

It is an amenable number.

20001323332 is a deficient number, since it is larger than the sum of its proper divisors (17309617468).

20001323332 is a wasteful number, since it uses less digits than its factorization.

20001323332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3331435 (or 3331433 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20001323332 its reverse (23332310002), we get a palindrome (43333633334).

The spelling of 20001323332 in words is "twenty billion, one million, three hundred twenty-three thousand, three hundred thirty-two".