4012204421 has 2 divisors, whose sum is σ = 4012204422. Its totient is φ = 4012204420.

The previous prime is 4012204403. The next prime is 4012204453. The reversal of 4012204421 is 1244022104.

4012204421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2599572196 + 1412632225 = 50986^2 + 37585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4012204421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4012204393 and 4012204402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4012204121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2006102210 + 2006102211.

It is an arithmetic number, because the mean of its divisors is an integer number (2006102211).

Almost surely, 2^4012204421 is an apocalyptic number.

It is an amenable number.

4012204421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4012204421 is an equidigital number, since it uses as much as digits as its factorization.

4012204421 is an evil number, because the sum of its binary digits is even.

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

The square root of 4012204421 is about 63341.9641391077. The cubic root of 4012204421 is about 1589.0138553622.

Adding to 4012204421 its reverse (1244022104), we get a palindrome (5256226525).

The spelling of 4012204421 in words is "four billion, twelve million, two hundred four thousand, four hundred twenty-one".