12011211222 has 32 divisors (see below), whose sum is σ = 24486453600. Its totient is φ = 3926776320.

The previous prime is 12011211221. The next prime is 12011211227. The reversal of 12011211222 is 22211211021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011211221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80718 + ... + 174750.

It is an arithmetic number, because the mean of its divisors is an integer number (765201675).

Almost surely, 2^12011211222 is an apocalyptic number.

12011211222 is an abundant number, since it is smaller than the sum of its proper divisors (12475242378).

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

12011211222 is a wasteful number, since it uses less digits than its factorization.

12011211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94448.

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

Adding to 12011211222 its reverse (22211211021), we get a palindrome (34222422243).

The spelling of 12011211222 in words is "twelve billion, eleven million, two hundred eleven thousand, two hundred twenty-two".