1223544402403 has 8 divisors (see below), whose sum is σ = 1224553689936. Its totient is φ = 1222535424000.

The previous prime is 1223544402391. The next prime is 1223544402427. The reversal of 1223544402403 is 3042044453221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223544402403 - 2²⁵ = 1223510847971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223544402433) 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 7 ways as a sum of consecutive naturals, for example, 8204875 + ... + 8352667.

It is an arithmetic number, because the mean of its divisors is an integer number (153069211242).

Almost surely, 2^{1223544402403} is an apocalyptic number.

1223544402403 is a deficient number, since it is larger than the sum of its proper divisors (1009287533).

1223544402403 is a wasteful number, since it uses less digits than its factorization.

1223544402403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154565.

The product of its (nonzero) digits is 92160, while the sum is 34.

Adding to 1223544402403 its reverse (3042044453221), we get a palindrome (4265588855624).

The spelling of 1223544402403 in words is "one trillion, two hundred twenty-three billion, five hundred forty-four million, four hundred two thousand, four hundred three".