1121121111212 has 12 divisors (see below), whose sum is σ = 1967783792520. Its totient is φ = 558897170496.

The previous prime is 1121121111211. The next prime is 1121121111217. The reversal of 1121121111212 is 2121111211211.

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

It is not an unprimeable number, because it can be changed into a prime (1121121111211) by changing a digit.

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, 415844762 + ... + 415847457.

It is an arithmetic number, because the mean of its divisors is an integer number (163981982710).

Almost surely, 2^{1121121111212} is an apocalyptic number.

It is an amenable number.

1121121111212 is a deficient number, since it is larger than the sum of its proper divisors (846662681308).

1121121111212 is a wasteful number, since it uses less digits than its factorization.

1121121111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831692560 (or 831692558 counting only the distinct ones).

The product of its digits is 16, while the sum is 17.

Adding to 1121121111212 its reverse (2121111211211), we get a palindrome (3242232322423).

Subtracting 1121121111212 from its reverse (2121111211211), we obtain a palindrome (999990099999).

The spelling of 1121121111212 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred eleven thousand, two hundred twelve".