12503401401 has 4 divisors (see below), whose sum is σ = 16671201872. Its totient is φ = 8335600932.

The previous prime is 12503401367. The next prime is 12503401403. The reversal of 12503401401 is 10410430521.

12503401401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10410430521 = 3 ⋅3470143507.

It is not a de Polignac number, because 12503401401 - 2²³ = 12495012793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12503401403) 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 3 ways as a sum of consecutive naturals, for example, 2083900231 + ... + 2083900236.

It is an arithmetic number, because the mean of its divisors is an integer number (4167800468).

Almost surely, 2^12503401401 is an apocalyptic number.

It is an amenable number.

12503401401 is a deficient number, since it is larger than the sum of its proper divisors (4167800471).

12503401401 is an equidigital number, since it uses as much as digits as its factorization.

12503401401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4167800470.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 12503401401 its reverse (10410430521), we get a palindrome (22913831922).

The spelling of 12503401401 in words is "twelve billion, five hundred three million, four hundred one thousand, four hundred one".