43133020221 has 16 divisors (see below), whose sum is σ = 60854538240. Its totient is φ = 27099272880.

The previous prime is 43133020213. The next prime is 43133020223. The reversal of 43133020221 is 12202033134.

43133020221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43133020221 - 2³ = 43133020213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43133020223) 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, 1970055 + ... + 1991828.

It is an arithmetic number, because the mean of its divisors is an integer number (3803408640).

Almost surely, 2^43133020221 is an apocalyptic number.

It is an amenable number.

43133020221 is a deficient number, since it is larger than the sum of its proper divisors (17721518019).

43133020221 is a wasteful number, since it uses less digits than its factorization.

43133020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3962096.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 43133020221 its reverse (12202033134), we get a palindrome (55335053355).

The spelling of 43133020221 in words is "forty-three billion, one hundred thirty-three million, twenty thousand, two hundred twenty-one".