1121242421212 has 24 divisors (see below), whose sum is σ = 1977375874320. Its totient is φ = 556278852480.

The previous prime is 1121242421203. The next prime is 1121242421213. The reversal of 1121242421212 is 2121242421211.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121242421213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4709338 + ... + 4941694.

It is an arithmetic number, because the mean of its divisors is an integer number (82390661430).

Almost surely, 2^{1121242421212} is an apocalyptic number.

It is an amenable number.

1121242421212 is a deficient number, since it is larger than the sum of its proper divisors (856133453108).

1121242421212 is a wasteful number, since it uses less digits than its factorization.

1121242421212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241701 (or 241699 counting only the distinct ones).

The product of its digits is 1024, while the sum is 25.

Adding to 1121242421212 its reverse (2121242421211), we get a palindrome (3242484842423).

Subtracting 1121242421212 from its reverse (2121242421211), we obtain a palindrome (999999999999).

The spelling of 1121242421212 in words is "one trillion, one hundred twenty-one billion, two hundred forty-two million, four hundred twenty-one thousand, two hundred twelve".