3421022221 has 4 divisors (see below), whose sum is σ = 3441507552. Its totient is φ = 3400536892.

The previous prime is 3421022197. The next prime is 3421022237. The reversal of 3421022221 is 1222201243.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1222201243 = 14947 ⋅81769.

It is a cyclic number.

It is not a de Polignac number, because 3421022221 - 2²⁵ = 3387467789 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 (3421022281) 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, 10242415 + ... + 10242748.

It is an arithmetic number, because the mean of its divisors is an integer number (860376888).

Almost surely, 2^3421022221 is an apocalyptic number.

It is an amenable number.

3421022221 is a deficient number, since it is larger than the sum of its proper divisors (20485331).

3421022221 is a wasteful number, since it uses less digits than its factorization.

3421022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20485330.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 3421022221 is about 58489.5052210223. The cubic root of 3421022221 is about 1506.7873484260.

Adding to 3421022221 its reverse (1222201243), we get a palindrome (4643223464).

It can be divided in two parts, 3421022 and 221, that added together give a palindrome (3421243).

The spelling of 3421022221 in words is "three billion, four hundred twenty-one million, twenty-two thousand, two hundred twenty-one".