4046001221 has 2 divisors, whose sum is σ = 4046001222. Its totient is φ = 4046001220.

The previous prime is 4046001217. The next prime is 4046001247. The reversal of 4046001221 is 1221006404.

4046001221 is digitally balanced in base 3, 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., 3518150596 + 527850625 = 59314^2 + 22975^2 .

It is a cyclic number.

It is not a de Polignac number, because 4046001221 - 2² = 4046001217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4046001193 and 4046001202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4046001121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2023000610 + 2023000611.

It is an arithmetic number, because the mean of its divisors is an integer number (2023000611).

Almost surely, 2^4046001221 is an apocalyptic number.

It is an amenable number.

4046001221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4046001221 is an equidigital number, since it uses as much as digits as its factorization.

4046001221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4046001221 is about 63608.1851729791. The cubic root of 4046001221 is about 1593.4630715431.

Adding to 4046001221 its reverse (1221006404), we get a palindrome (5267007625).

The spelling of 4046001221 in words is "four billion, forty-six million, one thousand, two hundred twenty-one".