12001122011223 has 6 divisors (see below), whose sum is σ = 17334954016224. Its totient is φ = 8000748007476.

The previous prime is 12001122011201. The next prime is 12001122011257. The reversal of 12001122011223 is 32211022110021.

12001122011223 is a `hidden beast` number, since 1 + 200 + 11 + 220 + 11 + 223 = 666.

It is not a de Polignac number, because 12001122011223 - 2³⁸ = 11726244104279 is a prime.

It is a super-2 number, since 2×12001122011223² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12001122011196 and 12001122011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001122011323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 666729000615 + ... + 666729000632.

It is an arithmetic number, because the mean of its divisors is an integer number (2889159002704).

Almost surely, 2^{12001122011223} is an apocalyptic number.

12001122011223 is a deficient number, since it is larger than the sum of its proper divisors (5333832005001).

12001122011223 is a wasteful number, since it uses less digits than its factorization.

12001122011223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333458001253 (or 1333458001250 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12001122011223 its reverse (32211022110021), we get a palindrome (44212144121244).

The spelling of 12001122011223 in words is "twelve trillion, one billion, one hundred twenty-two million, eleven thousand, two hundred twenty-three".