1224131520223 has 4 divisors (see below), whose sum is σ = 1236016292368. Its totient is φ = 1212246748080.

The previous prime is 1224131520191. The next prime is 1224131520229. The reversal of 1224131520223 is 3220251314221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1224131520223 - 2⁵ = 1224131520191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1224131520191 and 1224131520200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224131520229) 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 3 ways as a sum of consecutive naturals, for example, 5942385918 + ... + 5942386123.

It is an arithmetic number, because the mean of its divisors is an integer number (309004073092).

Almost surely, 2^{1224131520223} is an apocalyptic number.

1224131520223 is a deficient number, since it is larger than the sum of its proper divisors (11884772145).

1224131520223 is a wasteful number, since it uses less digits than its factorization.

1224131520223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11884772144.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 1224131520223 its reverse (3220251314221), we get a palindrome (4444382834444).

The spelling of 1224131520223 in words is "one trillion, two hundred twenty-four billion, one hundred thirty-one million, five hundred twenty thousand, two hundred twenty-three".