12011111001222 has 16 divisors (see below), whose sum is σ = 24360563158272. Its totient is φ = 3947313474440.

The previous prime is 12011111001193. The next prime is 12011111001247. The reversal of 12011111001222 is 22210011111021.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14097547698 + ... + 14097548549.

It is an arithmetic number, because the mean of its divisors is an integer number (1522535197392).

Almost surely, 2^{12011111001222} is an apocalyptic number.

12011111001222 is an abundant number, since it is smaller than the sum of its proper divisors (12349452157050).

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

12011111001222 is a wasteful number, since it uses less digits than its factorization.

12011111001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28195096323.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12011111001222 its reverse (22210011111021), we get a palindrome (34221122112243).

The spelling of 12011111001222 in words is "twelve trillion, eleven billion, one hundred eleven million, one thousand, two hundred twenty-two".