43221981300 has 144 divisors (see below), whose sum is σ = 127063867392. Its totient is φ = 11341411200.

The previous prime is 43221981289. The next prime is 43221981301. The reversal of 43221981300 is 318912234.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43221981301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12927429 + ... + 12930771.

It is an arithmetic number, because the mean of its divisors is an integer number (882387968).

Almost surely, 2^43221981300 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 43221981300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63531933696).

43221981300 is an abundant number, since it is smaller than the sum of its proper divisors (83841886092).

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

43221981300 is a wasteful number, since it uses less digits than its factorization.

43221981300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038 (or 4031 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 43221981300 in words is "forty-three billion, two hundred twenty-one million, nine hundred eighty-one thousand, three hundred".