11112222012 has 12 divisors (see below), whose sum is σ = 25928518056. Its totient is φ = 3704074000.

The previous prime is 11112221993. The next prime is 11112222031. The reversal of 11112222012 is 21022221111.

11112222012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11112221993) and next prime (11112222031).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 11112221982 and 11112222000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463009239 + ... + 463009262.

It is an arithmetic number, because the mean of its divisors is an integer number (2160709838).

Almost surely, 2^11112222012 is an apocalyptic number.

11112222012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11112222012 is an abundant number, since it is smaller than the sum of its proper divisors (14816296044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11112222012 is a wasteful number, since it uses less digits than its factorization.

11112222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926018508 (or 926018506 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11112222012 its reverse (21022221111), we get a palindrome (32134443123).

Subtracting 11112222012 from its reverse (21022221111), we obtain a palindrome (9909999099).

The spelling of 11112222012 in words is "eleven billion, one hundred twelve million, two hundred twenty-two thousand, twelve".