11222212012 has 24 divisors (see below), whose sum is σ = 22162991760. Its totient is φ = 4925108160.

The previous prime is 11222212007. The next prime is 11222212021. The reversal of 11222212012 is 21021222211.

It is a happy number.

It is an unprimeable number.

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, 4396143 + ... + 4398694.

It is an arithmetic number, because the mean of its divisors is an integer number (923457990).

Almost surely, 2^11222212012 is an apocalyptic number.

It is an amenable number.

11222212012 is a deficient number, since it is larger than the sum of its proper divisors (10940779748).

11222212012 is a wasteful number, since it uses less digits than its factorization.

11222212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8794881 (or 8794879 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11222212012 its reverse (21021222211), we get a palindrome (32243434223).

The spelling of 11222212012 in words is "eleven billion, two hundred twenty-two million, two hundred twelve thousand, twelve".