11121212012 has 24 divisors (see below), whose sum is σ = 20674407600. Its totient is φ = 5219608896.

The previous prime is 11121211987. The next prime is 11121212153. The reversal of 11121212012 is 21021212111.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662963 + ... + 679530.

It is an arithmetic number, because the mean of its divisors is an integer number (861433650).

Almost surely, 2^11121212012 is an apocalyptic number.

It is an amenable number.

11121212012 is a deficient number, since it is larger than the sum of its proper divisors (9553195588).

11121212012 is a wasteful number, since it uses less digits than its factorization.

11121212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342625 (or 1342623 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11121212012 its reverse (21021212111), we get a palindrome (32142424123).

Subtracting 11121212012 from its reverse (21021212111), we obtain a palindrome (9900000099).

The spelling of 11121212012 in words is "eleven billion, one hundred twenty-one million, two hundred twelve thousand, twelve".