4040332221 has 4 divisors (see below), whose sum is σ = 5387109632. Its totient is φ = 2693554812.

The previous prime is 4040332201. The next prime is 4040332243. The reversal of 4040332221 is 1222330404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4040332221 - 2⁶ = 4040332157 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 (4040332201) 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, 673388701 + ... + 673388706.

It is an arithmetic number, because the mean of its divisors is an integer number (1346777408).

Almost surely, 2^4040332221 is an apocalyptic number.

It is an amenable number.

4040332221 is a deficient number, since it is larger than the sum of its proper divisors (1346777411).

4040332221 is a wasteful number, since it uses less digits than its factorization.

4040332221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346777410.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 4040332221 is about 63563.6076776641. The cubic root of 4040332221 is about 1592.7185039294.

Adding to 4040332221 its reverse (1222330404), we get a palindrome (5262662625).

The spelling of 4040332221 in words is "four billion, forty million, three hundred thirty-two thousand, two hundred twenty-one".