12011122222 has 8 divisors (see below), whose sum is σ = 19654563672. Its totient is φ = 5459601000.

The previous prime is 12011122219. The next prime is 12011122309. The reversal of 12011122222 is 22222111021.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 12011122196 and 12011122205.

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, 272980029 + ... + 272980072.

It is an arithmetic number, because the mean of its divisors is an integer number (2456820459).

Almost surely, 2^12011122222 is an apocalyptic number.

12011122222 is a deficient number, since it is larger than the sum of its proper divisors (7643441450).

12011122222 is a wasteful number, since it uses less digits than its factorization.

12011122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545960114.

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

Adding to 12011122222 its reverse (22222111021), we get a palindrome (34233233243).

The spelling of 12011122222 in words is "twelve billion, eleven million, one hundred twenty-two thousand, two hundred twenty-two".