1211222011112 has 16 divisors (see below), whose sum is σ = 2302151426340. Its totient is φ = 597314964096.

The previous prime is 1211222011093. The next prime is 1211222011117. The reversal of 1211222011112 is 2111102221121.

It can be written as a sum of positive squares in 2 ways, for example, as 1185167531716 + 26054479396 = 1088654^2 + 161414^2 .

It is not an unprimeable number, because it can be changed into a prime (1211222011117) 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, 1037004563 + ... + 1037005730.

Almost surely, 2^{1211222011112} is an apocalyptic number.

It is an amenable number.

1211222011112 is a deficient number, since it is larger than the sum of its proper divisors (1090929415228).

1211222011112 is a wasteful number, since it uses less digits than its factorization.

1211222011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074010372 (or 2074010368 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1211222011112 its reverse (2111102221121), we get a palindrome (3322324232233).

The spelling of 1211222011112 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, eleven thousand, one hundred twelve".