12111022222 has 16 divisors (see below), whose sum is σ = 19831961520. Its totient is φ = 5513130432.

The previous prime is 12111022213. The next prime is 12111022223. The reversal of 12111022222 is 22222011121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12111022196 and 12111022205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111022223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3188572 + ... + 3192367.

It is an arithmetic number, because the mean of its divisors is an integer number (1239497595).

Almost surely, 2^12111022222 is an apocalyptic number.

12111022222 is a deficient number, since it is larger than the sum of its proper divisors (7720939298).

12111022222 is a wasteful number, since it uses less digits than its factorization.

12111022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6381027.

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

Adding to 12111022222 its reverse (22222011121), we get a palindrome (34333033343).

The spelling of 12111022222 in words is "twelve billion, one hundred eleven million, twenty-two thousand, two hundred twenty-two".