221112133231112 has 16 divisors (see below), whose sum is σ = 416875776053100. Its totient is φ = 109945259616960.

The previous prime is 221112133231111. The next prime is 221112133231147. The reversal of 221112133231112 is 211132331211122.

It can be written as a sum of positive squares in 2 ways, for example, as 221037382390276 + 74750840836 = 14867326^2 + 273406^2 .

It is not an unprimeable number, because it can be changed into a prime (221112133231111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76350873287 + ... + 76350876182.

Almost surely, 2^{221112133231112} is an apocalyptic number.

It is an amenable number.

221112133231112 is a deficient number, since it is larger than the sum of its proper divisors (195763642821988).

221112133231112 is a wasteful number, since it uses less digits than its factorization.

221112133231112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152701749656 (or 152701749652 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

Adding to 221112133231112 its reverse (211132331211122), we get a palindrome (432244464442234).

The spelling of 221112133231112 in words is "two hundred twenty-one trillion, one hundred twelve billion, one hundred thirty-three million, two hundred thirty-one thousand, one hundred twelve".