12020424401 has 4 divisors (see below), whose sum is σ = 12028849392. Its totient is φ = 12011999412.

The previous prime is 12020424371. The next prime is 12020424419. The reversal of 12020424401 is 10442402021.

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.

It is a cyclic number.

It is not a de Polignac number, because 12020424401 - 2⁶ = 12020424337 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 (12020424491) 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, 4210355 + ... + 4213208.

It is an arithmetic number, because the mean of its divisors is an integer number (3007212348).

Almost surely, 2^12020424401 is an apocalyptic number.

It is an amenable number.

12020424401 is a deficient number, since it is larger than the sum of its proper divisors (8424991).

12020424401 is an equidigital number, since it uses as much as digits as its factorization.

12020424401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8424990.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12020424401 its reverse (10442402021), we get a palindrome (22462826422).

The spelling of 12020424401 in words is "twelve billion, twenty million, four hundred twenty-four thousand, four hundred one".