12188375401 has 4 divisors (see below), whose sum is σ = 12258828612. Its totient is φ = 12117922192.

The previous prime is 12188375399. The next prime is 12188375429. The reversal of 12188375401 is 10457388121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10517528025 + 1670847376 = 102555^2 + 40876^2 .

It is a cyclic number.

It is not a de Polignac number, because 12188375401 - 2¹ = 12188375399 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12188375201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35226346 + ... + 35226691.

It is an arithmetic number, because the mean of its divisors is an integer number (3064707153).

Almost surely, 2^12188375401 is an apocalyptic number.

It is an amenable number.

12188375401 is a deficient number, since it is larger than the sum of its proper divisors (70453211).

12188375401 is an equidigital number, since it uses as much as digits as its factorization.

12188375401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70453210.

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 12188375401 in words is "twelve billion, one hundred eighty-eight million, three hundred seventy-five thousand, four hundred one".