12011201223 has 32 divisors (see below), whose sum is σ = 18741043200. Its totient is φ = 6699411936.

The previous prime is 12011201221. The next prime is 12011201281. The reversal of 12011201223 is 32210211021.

It is not a de Polignac number, because 12011201223 - 2¹ = 12011201221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011201221) 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 31 ways as a sum of consecutive naturals, for example, 1693198 + ... + 1700276.

It is an arithmetic number, because the mean of its divisors is an integer number (585657600).

Almost surely, 2^12011201223 is an apocalyptic number.

12011201223 is a deficient number, since it is larger than the sum of its proper divisors (6729841977).

12011201223 is a wasteful number, since it uses less digits than its factorization.

12011201223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9011.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12011201223 its reverse (32210211021), we get a palindrome (44221412244).

The spelling of 12011201223 in words is "twelve billion, eleven million, two hundred one thousand, two hundred twenty-three".