12231543213 has 16 divisors (see below), whose sum is σ = 18610557760. Its totient is φ = 7933973328.

The previous prime is 12231543187. The next prime is 12231543217. The reversal of 12231543213 is 31234513221.

12231543213 is a `hidden beast` number, since 1 + 22 + 315 + 4 + 321 + 3 = 666.

12231543213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12231543213 - 2¹⁰ = 12231542189 is a prime.

It is a super-2 number, since 2×12231543213² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231543217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6120895 + ... + 6122892.

It is an arithmetic number, because the mean of its divisors is an integer number (1163159860).

Almost surely, 2^12231543213 is an apocalyptic number.

It is an amenable number.

12231543213 is a deficient number, since it is larger than the sum of its proper divisors (6379014547).

12231543213 is a wasteful number, since it uses less digits than its factorization.

12231543213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12243833 (or 12243827 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The spelling of 12231543213 in words is "twelve billion, two hundred thirty-one million, five hundred forty-three thousand, two hundred thirteen".