3212430221 has 16 divisors (see below), whose sum is σ = 4313194368. Its totient is φ = 2310638400.

The previous prime is 3212430209. The next prime is 3212430241. The reversal of 3212430221 is 1220342123.

It is not a de Polignac number, because 3212430221 - 2¹⁰ = 3212429197 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3212430193 and 3212430202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3212430241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1603610 + ... + 1605611.

It is an arithmetic number, because the mean of its divisors is an integer number (269574648).

Almost surely, 2^3212430221 is an apocalyptic number.

It is an amenable number.

3212430221 is a deficient number, since it is larger than the sum of its proper divisors (1100764147).

3212430221 is a wasteful number, since it uses less digits than its factorization.

3212430221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209252.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 3212430221 is about 56678.3046764809. The cubic root of 3212430221 is about 1475.5181894335.

Adding to 3212430221 its reverse (1220342123), we get a palindrome (4432772344).

The spelling of 3212430221 in words is "three billion, two hundred twelve million, four hundred thirty thousand, two hundred twenty-one".