441021213 has 32 divisors (see below), whose sum is σ = 665600000. Its totient is φ = 288555696.

The previous prime is 441021211. The next prime is 441021233. The reversal of 441021213 is 312120144.

441021213 is a `hidden beast` number, since 441 + 0 + 212 + 13 = 666.

It is not a de Polignac number, because 441021213 - 2¹ = 441021211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441021211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 423948 + ... + 424986.

It is an arithmetic number, because the mean of its divisors is an integer number (20800000).

Almost surely, 2^441021213 is an apocalyptic number.

It is an amenable number.

441021213 is a deficient number, since it is larger than the sum of its proper divisors (224578787).

441021213 is a wasteful number, since it uses less digits than its factorization.

441021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326 (or 1320 counting only the distinct ones).

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

The square root of 441021213 is about 21000.5050653550. The cubic root of 441021213 is about 761.1784654565.

Adding to 441021213 its reverse (312120144), we get a palindrome (753141357).

The spelling of 441021213 in words is "four hundred forty-one million, twenty-one thousand, two hundred thirteen".