1121022222112 has 24 divisors (see below), whose sum is σ = 2376782692956. Its totient is φ = 517394871552.

The previous prime is 1121022222107. The next prime is 1121022222161. The reversal of 1121022222112 is 2112222201211.

It can be written as a sum of positive squares in 2 ways, for example, as 1108143603856 + 12878618256 = 1052684^2 + 113484^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1121022222112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1347382063 + ... + 1347382894.

Almost surely, 2^{1121022222112} is an apocalyptic number.

It is an amenable number.

1121022222112 is an abundant number, since it is smaller than the sum of its proper divisors (1255760470844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121022222112 is a wasteful number, since it uses less digits than its factorization.

1121022222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2694764980 (or 2694764972 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1121022222112 its reverse (2112222201211), we get a palindrome (3233244423323).

The spelling of 1121022222112 in words is "one trillion, one hundred twenty-one billion, twenty-two million, two hundred twenty-two thousand, one hundred twelve".