11111001222012 has 48 divisors (see below), whose sum is σ = 26211653395200. Its totient is φ = 3662927811712.

The previous prime is 11111001222001. The next prime is 11111001222121. The reversal of 11111001222012 is 21022210011111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11111001221982 and 11111001222000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6454113 + ... + 7992344.

It is an arithmetic number, because the mean of its divisors is an integer number (546076112400).

Almost surely, 2^{11111001222012} is an apocalyptic number.

11111001222012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11111001222012 is an abundant number, since it is smaller than the sum of its proper divisors (15100652173188).

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

11111001222012 is a wasteful number, since it uses less digits than its factorization.

11111001222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14447170 (or 14447168 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11111001222012 its reverse (21022210011111), we get a palindrome (32133211233123).

The spelling of 11111001222012 in words is "eleven trillion, one hundred eleven billion, one million, two hundred twenty-two thousand, twelve".