3423421221 has 32 divisors (see below), whose sum is σ = 5103656448. Its totient is φ = 2023237440.

The previous prime is 3423421217. The next prime is 3423421231. The reversal of 3423421221 is 1221243243.

It is a happy number.

It is not a de Polignac number, because 3423421221 - 2² = 3423421217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3423421191 and 3423421200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3423421231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1072590 + ... + 1075776.

It is an arithmetic number, because the mean of its divisors is an integer number (159489264).

Almost surely, 2^3423421221 is an apocalyptic number.

It is an amenable number.

3423421221 is a deficient number, since it is larger than the sum of its proper divisors (1680235227).

3423421221 is a wasteful number, since it uses less digits than its factorization.

3423421221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4001.

The product of its digits is 2304, while the sum is 24.

The square root of 3423421221 is about 58510.0095795583. The cubic root of 3423421221 is about 1507.1394788699.

Adding to 3423421221 its reverse (1221243243), we get a palindrome (4644664464).

It can be divided in two parts, 34234 and 21221, that added together give a palindrome (55455).

The spelling of 3423421221 in words is "three billion, four hundred twenty-three million, four hundred twenty-one thousand, two hundred twenty-one".