3421402221 has 8 divisors (see below), whose sum is σ = 4636654624. Its totient is φ = 2243542320.

The previous prime is 3421402217. The next prime is 3421402261. The reversal of 3421402221 is 1222041243.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3421402221 - 2² = 3421402217 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 (3421402211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9347911 + ... + 9348276.

It is an arithmetic number, because the mean of its divisors is an integer number (579581828).

Almost surely, 2^3421402221 is an apocalyptic number.

It is an amenable number.

3421402221 is a deficient number, since it is larger than the sum of its proper divisors (1215252403).

3421402221 is a wasteful number, since it uses less digits than its factorization.

3421402221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18696251.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 3421402221 is about 58492.7535768321. The cubic root of 3421402221 is about 1506.8431366239.

Adding to 3421402221 its reverse (1222041243), we get a palindrome (4643443464).

The spelling of 3421402221 in words is "three billion, four hundred twenty-one million, four hundred two thousand, two hundred twenty-one".