8831221388 has 12 divisors (see below), whose sum is σ = 16859604552. Its totient is φ = 4014191520.

The previous prime is 8831221367. The next prime is 8831221397.

8831221388 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 200709577 = 8831221388 / (8 + 8 + 3 + 1 + 2 + 2 + 1 + 3 + 8 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100354745 + ... + 100354832.

It is an arithmetic number, because the mean of its divisors is an integer number (1404967046).

Almost surely, 2^8831221388 is an apocalyptic number.

It is an amenable number.

8831221388 is a deficient number, since it is larger than the sum of its proper divisors (8028383164).

8831221388 is a wasteful number, since it uses less digits than its factorization.

8831221388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200709592 (or 200709590 counting only the distinct ones).

The product of its digits is 147456, while the sum is 44.

The square root of 8831221388 is about 93974.5784135263. The cubic root of 8831221388 is about 2066.9989565016.

The spelling of 8831221388 in words is "eight billion, eight hundred thirty-one million, two hundred twenty-one thousand, three hundred eighty-eight".