4333213421 has 2 divisors, whose sum is σ = 4333213422. Its totient is φ = 4333213420.

The previous prime is 4333213411. The next prime is 4333213439. The reversal of 4333213421 is 1243123334.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2663592100 + 1669621321 = 51610^2 + 40861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4333213421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4333213411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2166606710 + 2166606711.

It is an arithmetic number, because the mean of its divisors is an integer number (2166606711).

Almost surely, 2^4333213421 is an apocalyptic number.

It is an amenable number.

4333213421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4333213421 is an equidigital number, since it uses as much as digits as its factorization.

4333213421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 26.

The square root of 4333213421 is about 65827.1480545831. The cubic root of 4333213421 is about 1630.3093772100.

Adding to 4333213421 its reverse (1243123334), we get a palindrome (5576336755).

The spelling of 4333213421 in words is "four billion, three hundred thirty-three million, two hundred thirteen thousand, four hundred twenty-one".