12011222 has 8 divisors (see below), whose sum is σ = 18176616.
Its totient is φ = 5952352.
The previous prime is 12011213. The next prime is 12011227. The reversal of 12011222 is 22211021.
Adding to 12011222 its reverse (22211021), we get a palindrome (34222243).
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12011227) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26348 + ... + 26799.
It is an arithmetic number, because the mean of its divisors is an integer number (2272077).
Almost surely, 212011222 is an apocalyptic number.
12011222 is a deficient number, since it is larger than the sum of its proper divisors (6165394).
12011222 is a wasteful number, since it uses less digits than its factorization.
12011222 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 53262.
The product of its (nonzero) digits is 16, while the sum is 11.
The square root of 12011222 is about 3465.7209928094.
The cubic root of 12011222 is about 229.0141928492.
The spelling of 12011222 in words is "twelve million, eleven thousand, two hundred twenty-two".