3221424421 has 4 divisors (see below), whose sum is σ = 3296341312. Its totient is φ = 3146507532.

The previous prime is 3221424403. The next prime is 3221424431. The reversal of 3221424421 is 1244241223.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3221424421 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 (3221424431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37458381 + ... + 37458466.

It is an arithmetic number, because the mean of its divisors is an integer number (824085328).

Almost surely, 2^3221424421 is an apocalyptic number.

It is an amenable number.

3221424421 is a deficient number, since it is larger than the sum of its proper divisors (74916891).

3221424421 is an equidigital number, since it uses as much as digits as its factorization.

3221424421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74916890.

The product of its digits is 3072, while the sum is 25.

The square root of 3221424421 is about 56757.5935095913. The cubic root of 3221424421 is about 1476.8939640012.

Adding to 3221424421 its reverse (1244241223), we get a palindrome (4465665644).

The spelling of 3221424421 in words is "three billion, two hundred twenty-one million, four hundred twenty-four thousand, four hundred twenty-one".