3213010221 has 16 divisors (see below), whose sum is σ = 4424194560. Its totient is φ = 2071978560.

The previous prime is 3213010187. The next prime is 3213010237. The reversal of 3213010221 is 1220103123.

It is not a de Polignac number, because 3213010221 - 2¹³ = 3213002029 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3213010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3213010321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244035 + ... + 256863.

It is an arithmetic number, because the mean of its divisors is an integer number (276512160).

Almost surely, 2^3213010221 is an apocalyptic number.

3213010221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3213010221 is a deficient number, since it is larger than the sum of its proper divisors (1211184339).

3213010221 is a wasteful number, since it uses less digits than its factorization.

3213010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15556.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 3213010221 is about 56683.4210417826. The cubic root of 3213010221 is about 1475.6069850380.

Adding to 3213010221 its reverse (1220103123), we get a palindrome (4433113344).

The spelling of 3213010221 in words is "three billion, two hundred thirteen million, ten thousand, two hundred twenty-one".