43221240200221 has 4 divisors (see below), whose sum is σ = 44389381827292. Its totient is φ = 42053098573152.

The previous prime is 43221240200153. The next prime is 43221240200233. The reversal of 43221240200221 is 12200204212234.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29134204507321 + 14087035692900 = 5397611^2 + 3753270^2 .

It is a cyclic number.

It is not a de Polignac number, because 43221240200221 - 2¹⁵ = 43221240167453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43221240200251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 584070813480 + ... + 584070813553.

It is an arithmetic number, because the mean of its divisors is an integer number (11097345456823).

Almost surely, 2^{43221240200221} is an apocalyptic number.

It is an amenable number.

43221240200221 is a deficient number, since it is larger than the sum of its proper divisors (1168141627071).

43221240200221 is a wasteful number, since it uses less digits than its factorization.

43221240200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168141627070.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 43221240200221 its reverse (12200204212234), we get a palindrome (55421444412455).

The spelling of 43221240200221 in words is "forty-three trillion, two hundred twenty-one billion, two hundred forty million, two hundred thousand, two hundred twenty-one".