11111012221222 has 8 divisors (see below), whose sum is σ = 16682109091200. Its totient is φ = 5550309190824.

The previous prime is 11111012221207. The next prime is 11111012221241. The reversal of 11111012221222 is 22212221011111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11111012221222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2598457222 + ... + 2598461497.

It is an arithmetic number, because the mean of its divisors is an integer number (2085263636400).

Almost surely, 2^{11111012221222} is an apocalyptic number.

11111012221222 is a deficient number, since it is larger than the sum of its proper divisors (5571096869978).

11111012221222 is a wasteful number, since it uses less digits than its factorization.

11111012221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5196919790.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11111012221222 its reverse (22212221011111), we get a palindrome (33323233232333).

The spelling of 11111012221222 in words is "eleven trillion, one hundred eleven billion, twelve million, two hundred twenty-one thousand, two hundred twenty-two".