3212013221 has 2 divisors, whose sum is σ = 3212013222. Its totient is φ = 3212013220.

The previous prime is 3212013209. The next prime is 3212013239. The reversal of 3212013221 is 1223102123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2218881025 + 993132196 = 47105^2 + 31514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3212013221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3212013221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3212613221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606006610 + 1606006611.

It is an arithmetic number, because the mean of its divisors is an integer number (1606006611).

Almost surely, 2^3212013221 is an apocalyptic number.

It is an amenable number.

3212013221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3212013221 is an equidigital number, since it uses as much as digits as its factorization.

3212013221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3212013221 is about 56674.6259008386. The cubic root of 3212013221 is about 1475.4543418510.

Adding to 3212013221 its reverse (1223102123), we get a palindrome (4435115344).

The spelling of 3212013221 in words is "three billion, two hundred twelve million, thirteen thousand, two hundred twenty-one".