1121121212212 has 12 divisors (see below), whose sum is σ = 1962295772836. Its totient is φ = 560465277120.

The previous prime is 1121121212209. The next prime is 1121121212219. The reversal of 1121121212212 is 2122121211211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 383710869136 + 737410343076 = 619444^2 + 858726^2 .

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 1121121212212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121121212219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23805783 + ... + 23852830.

Almost surely, 2^{1121121212212} is an apocalyptic number.

It is an amenable number.

1121121212212 is a deficient number, since it is larger than the sum of its proper divisors (841174560624).

1121121212212 is a wasteful number, since it uses less digits than its factorization.

1121121212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47664498 (or 47664496 counting only the distinct ones).

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

Adding to 1121121212212 its reverse (2122121211211), we get a palindrome (3243242423423).

The spelling of 1121121212212 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred twelve thousand, two hundred twelve".