11212112012 has 12 divisors (see below), whose sum is σ = 19624264296. Its totient is φ = 5605179360.

The previous prime is 11212111973. The next prime is 11212112063. The reversal of 11212112012 is 21021121211.

It is a super-2 number, since 2×11212112012² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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, 189953 + ... + 241880.

It is an arithmetic number, because the mean of its divisors is an integer number (1635355358).

Almost surely, 2^11212112012 is an apocalyptic number.

It is an amenable number.

11212112012 is a deficient number, since it is larger than the sum of its proper divisors (8412152284).

11212112012 is a wasteful number, since it uses less digits than its factorization.

11212112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438328 (or 438326 counting only the distinct ones).

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

Adding to 11212112012 its reverse (21021121211), we get a palindrome (32233233223).

The spelling of 11212112012 in words is "eleven billion, two hundred twelve million, one hundred twelve thousand, twelve".