22000043500 has 48 divisors (see below), whose sum is σ = 48588059520. Its totient is φ = 8701123200.

The previous prime is 22000043497. The next prime is 22000043501. The reversal of 22000043500 is 534000022.

It is not an unprimeable number, because it can be changed into a prime (22000043501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202692 + ... + 291691.

It is an arithmetic number, because the mean of its divisors is an integer number (1012251240).

Almost surely, 2^22000043500 is an apocalyptic number.

22000043500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22000043500 is an abundant number, since it is smaller than the sum of its proper divisors (26588016020).

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

22000043500 is a wasteful number, since it uses less digits than its factorization.

22000043500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494491 (or 494479 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

Adding to 22000043500 its reverse (534000022), we get a palindrome (22534043522).

The spelling of 22000043500 in words is "twenty-two billion, forty-three thousand, five hundred".