3111221023312 has 40 divisors (see below), whose sum is σ = 6066797063976. Its totient is φ = 1545597321216.

The previous prime is 3111221023289. The next prime is 3111221023333. The reversal of 3111221023312 is 2133201221113.

It can be written as a sum of positive squares in 4 ways, for example, as 87879045136 + 3023341978176 = 296444^2 + 1738776^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47878908 + ... + 47943844.

Almost surely, 2^{3111221023312} is an apocalyptic number.

It is an amenable number.

3111221023312 is a deficient number, since it is larger than the sum of its proper divisors (2955576040664).

3111221023312 is a wasteful number, since it uses less digits than its factorization.

3111221023312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84175 (or 84169 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 3111221023312 its reverse (2133201221113), we get a palindrome (5244422244425).

The spelling of 3111221023312 in words is "three trillion, one hundred eleven billion, two hundred twenty-one million, twenty-three thousand, three hundred twelve".