12543412222224 has 405 divisors, whose sum is σ = 38664336531951. Its totient is φ = 3794401428480.

The previous prime is 12543412222219. The next prime is 12543412222301. The reversal of 12543412222224 is 42222221434521.

The square root of 12543412222224 is 3541668.

It is a perfect power (a square), and thus also a powerful number.

12543412222224 is a `hidden beast` number, since 1 + 2 + 54 + 341 + 22 + 22 + 224 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1261874782224 + 11281537440000 = 1123332^2 + 3358800^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 40332515029 + ... + 40332515339.

Almost surely, 2^{12543412222224} is an apocalyptic number.

12543412222224 is the 3541668-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12543412222224

12543412222224 is an abundant number, since it is smaller than the sum of its proper divisors (26120924309727).

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

12543412222224 is an equidigital number, since it uses as much as digits as its factorization.

12543412222224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808 (or 402 counting only the distinct ones).

The product of its digits is 122880, while the sum is 36.

Multiplying 12543412222224 by its sum of digits (36), we get a square (451562840000064 = 21250008²).

12543412222224 divided by its sum of digits (36) gives a square (348428117284 = 590278²).

Adding to 12543412222224 its reverse (42222221434521), we get a palindrome (54765633656745).

The spelling of 12543412222224 in words is "twelve trillion, five hundred forty-three billion, four hundred twelve million, two hundred twenty-two thousand, two hundred twenty-four".