22003332500 has 30 divisors (see below), whose sum is σ = 48116892978. Its totient is φ = 8801332000.

The previous prime is 22003332499. The next prime is 22003332503. The reversal of 22003332500 is 523330022.

It can be written as a sum of positive squares in 5 ways, for example, as 2448666256 + 19554666244 = 49484^2 + 139838^2 .

It is a super-2 number, since 2×22003332500² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22003332503) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4398167 + ... + 4403166.

Almost surely, 2^22003332500 is an apocalyptic number.

22003332500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22003332500 is an abundant number, since it is smaller than the sum of its proper divisors (26113560478).

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

22003332500 is an equidigital number, since it uses as much as digits as its factorization.

22003332500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8801357 (or 8801340 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 20.

Adding to 22003332500 its reverse (523330022), we get a palindrome (22526662522).

The spelling of 22003332500 in words is "twenty-two billion, three million, three hundred thirty-two thousand, five hundred".