3128221112 has 32 divisors (see below), whose sum is σ = 6072321600. Its totient is φ = 1509848064.

The previous prime is 3128221091. The next prime is 3128221127. The reversal of 3128221112 is 2111228213.

It is a super-3 number, since 3×3128221112³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29537 + ... + 84432.

It is an arithmetic number, because the mean of its divisors is an integer number (189760050).

Almost surely, 2^3128221112 is an apocalyptic number.

It is an amenable number.

3128221112 is a deficient number, since it is larger than the sum of its proper divisors (2944100488).

3128221112 is a wasteful number, since it uses less digits than its factorization.

3128221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114095 (or 114091 counting only the distinct ones).

The product of its digits is 384, while the sum is 23.

The square root of 3128221112 is about 55930.5025187509. The cubic root of 3128221112 is about 1462.5110213405.

Adding to 3128221112 its reverse (2111228213), we get a palindrome (5239449325).

The spelling of 3128221112 in words is "three billion, one hundred twenty-eight million, two hundred twenty-one thousand, one hundred twelve".