43221134500 has 96 divisors (see below), whose sum is σ = 95148144000. Its totient is φ = 17151120000.

The previous prime is 43221134497. The next prime is 43221134519. The reversal of 43221134500 is 543112234.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52644090 + ... + 52644910.

It is an arithmetic number, because the mean of its divisors is an integer number (991126500).

Almost surely, 2^43221134500 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 43221134500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47574072000).

43221134500 is an abundant number, since it is smaller than the sum of its proper divisors (51927009500).

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

43221134500 is a wasteful number, since it uses less digits than its factorization.

43221134500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550 (or 1538 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 43221134500 its reverse (543112234), we get a palindrome (43764246734).

The spelling of 43221134500 in words is "forty-three billion, two hundred twenty-one million, one hundred thirty-four thousand, five hundred".