8331221338 has 16 divisors (see below), whose sum is σ = 13649186880. Its totient is φ = 3782396800.

The previous prime is 8331221333. The next prime is 8331221369.

8331221338 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (8331221333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207223 + ... + 244138.

It is an arithmetic number, because the mean of its divisors is an integer number (853074180).

Almost surely, 2^8331221338 is an apocalyptic number.

8331221338 is a deficient number, since it is larger than the sum of its proper divisors (5317965542).

8331221338 is a wasteful number, since it uses less digits than its factorization.

8331221338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452213.

The product of its digits is 20736, while the sum is 34.

The square root of 8331221338 is about 91275.5243096417. The cubic root of 8331221338 is about 2027.2293762901.

The spelling of 8331221338 in words is "eight billion, three hundred thirty-one million, two hundred twenty-one thousand, three hundred thirty-eight".