22001332032 has 168 divisors, whose sum is σ = 63942569600. Its totient is φ = 7232053248.

The previous prime is 22001332007. The next prime is 22001332033. The reversal of 22001332032 is 23023310022.

It is a happy number.

It is a super-2 number, since 2×22001332032² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22001331996 and 22001332014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001332033) 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 23 ways as a sum of consecutive naturals, for example, 21174969 + ... + 21176007.

Almost surely, 2^22001332032 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 22001332032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31971284800).

22001332032 is an abundant number, since it is smaller than the sum of its proper divisors (41941237568).

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

22001332032 is a wasteful number, since it uses less digits than its factorization.

22001332032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533 (or 1520 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 22001332032 its reverse (23023310022), we get a palindrome (45024642054).

The spelling of 22001332032 in words is "twenty-two billion, one million, three hundred thirty-two thousand, thirty-two".