4211321 has 2 divisors, whose sum is σ = 4211322. Its totient is φ = 4211320.

The previous prime is 4211299. The next prime is 4211371. The reversal of 4211321 is 1231124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3857296 + 354025 = 1964^2 + 595^2 .

It is a cyclic number.

It is not a de Polignac number, because 4211321 - 2¹⁸ = 3949177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4211296 and 4211305.

It is not a weakly prime, because it can be changed into another prime (4211371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2105660 + 2105661.

It is an arithmetic number, because the mean of its divisors is an integer number (2105661).

Almost surely, 2^4211321 is an apocalyptic number.

It is an amenable number.

4211321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4211321 is an equidigital number, since it uses as much as digits as its factorization.

4211321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 14.

The square root of 4211321 is about 2052.1503356236. The cubic root of 4211321 is about 161.4876998303.

Adding to 4211321 its reverse (1231124), we get a palindrome (5442445).

The spelling of 4211321 in words is "four million, two hundred eleven thousand, three hundred twenty-one".