3128221113 has 8 divisors (see below), whose sum is σ = 4221214368. Its totient is φ = 2060354304.

The previous prime is 3128221091. The next prime is 3128221127. The reversal of 3128221113 is 3111228213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3128221113 - 2⁵ = 3128221081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3128221133) 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, 6281320 + ... + 6281817.

It is an arithmetic number, because the mean of its divisors is an integer number (527651796).

Almost surely, 2^3128221113 is an apocalyptic number.

It is an amenable number.

3128221113 is a deficient number, since it is larger than the sum of its proper divisors (1092993255).

3128221113 is a wasteful number, since it uses less digits than its factorization.

3128221113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12563223.

The product of its digits is 576, while the sum is 24.

The square root of 3128221113 is about 55930.5025276906. The cubic root of 3128221113 is about 1462.5110214963.

Adding to 3128221113 its reverse (3111228213), we get a palindrome (6239449326).

The spelling of 3128221113 in words is "three billion, one hundred twenty-eight million, two hundred twenty-one thousand, one hundred thirteen".