12011444143223 has 6 divisors (see below), whose sum is σ = 13972496248296. Its totient is φ = 10295523551292.

The previous prime is 12011444143169. The next prime is 12011444143247. The reversal of 12011444143223 is 32234144411021.

It is not a de Polignac number, because 12011444143223 - 2¹⁰ = 12011444142199 is a prime.

It is a super-2 number, since 2×12011444143223² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12011444143223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011444143273) 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, 122565756515 + ... + 122565756612.

It is an arithmetic number, because the mean of its divisors is an integer number (2328749374716).

Almost surely, 2^{12011444143223} is an apocalyptic number.

12011444143223 is a deficient number, since it is larger than the sum of its proper divisors (1961052105073).

12011444143223 is an equidigital number, since it uses as much as digits as its factorization.

12011444143223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245131513141 (or 245131513134 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 12011444143223 its reverse (32234144411021), we get a palindrome (44245588554244).

The spelling of 12011444143223 in words is "twelve trillion, eleven billion, four hundred forty-four million, one hundred forty-three thousand, two hundred twenty-three".