11221000012 has 24 divisors (see below), whose sum is σ = 20677912640. Its totient is φ = 5313243600.

The previous prime is 11220999997. The next prime is 11221000051. The reversal of 11221000012 is 21000012211.

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, 190783 + ... + 242569.

Almost surely, 2^11221000012 is an apocalyptic number.

It is an amenable number.

11221000012 is a deficient number, since it is larger than the sum of its proper divisors (9456912628).

11221000012 is a wasteful number, since it uses less digits than its factorization.

11221000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54661 (or 54659 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11221000012 its reverse (21000012211), we get a palindrome (32221012223).

The spelling of 11221000012 in words is "eleven billion, two hundred twenty-one million, twelve", and thus it is an aban number.