1122121221112 has 32 divisors (see below), whose sum is σ = 2147501905200. Its totient is φ = 549571880704.

The previous prime is 1122121221049. The next prime is 1122121221131. The reversal of 1122121221112 is 2111221212211.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1122121221112.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7288363 + ... + 7440730.

Almost surely, 2^{1122121221112} is an apocalyptic number.

It is an amenable number.

1122121221112 is a deficient number, since it is larger than the sum of its proper divisors (1025380684088).

1122121221112 is a wasteful number, since it uses less digits than its factorization.

1122121221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14729295 (or 14729291 counting only the distinct ones).

The product of its digits is 64, while the sum is 19.

Adding to 1122121221112 its reverse (2111221212211), we get a palindrome (3233342433323).

The spelling of 1122121221112 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred twelve".