12213040401 has 24 divisors (see below), whose sum is σ = 18304674024. Its totient is φ = 7840281600.

The previous prime is 12213040387. The next prime is 12213040409. The reversal of 12213040401 is 10404031221.

12213040401 is a `hidden beast` number, since 1 + 221 + 3 + 0 + 40 + 401 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5972198400 + 6240842001 = 77280^2 + 78999^2 .

It is not a de Polignac number, because 12213040401 - 2⁹ = 12213039889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12213040409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156750 + ... + 221351.

It is an arithmetic number, because the mean of its divisors is an integer number (762694751).

Almost surely, 2^12213040401 is an apocalyptic number.

It is an amenable number.

12213040401 is a deficient number, since it is larger than the sum of its proper divisors (6091633623).

12213040401 is a wasteful number, since it uses less digits than its factorization.

12213040401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378241 (or 378238 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12213040401 its reverse (10404031221), we get a palindrome (22617071622).

The spelling of 12213040401 in words is "twelve billion, two hundred thirteen million, forty thousand, four hundred one".