12011420401 has 4 divisors (see below), whose sum is σ = 12034387312. Its totient is φ = 11988453492.

The previous prime is 12011420381. The next prime is 12011420417. The reversal of 12011420401 is 10402411021.

It is a happy number.

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: 10402411021 = 89669 ⋅116009.

It is a cyclic number.

It is not a de Polignac number, because 12011420401 - 2¹³ = 12011412209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12011420471) 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, 11482671 + ... + 11483716.

It is an arithmetic number, because the mean of its divisors is an integer number (3008596828).

Almost surely, 2^12011420401 is an apocalyptic number.

It is an amenable number.

12011420401 is a deficient number, since it is larger than the sum of its proper divisors (22966911).

12011420401 is an equidigital number, since it uses as much as digits as its factorization.

12011420401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22966910.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12011420401 its reverse (10402411021), we get a palindrome (22413831422).

The spelling of 12011420401 in words is "twelve billion, eleven million, four hundred twenty thousand, four hundred one".