3212105509 has 2 divisors, whose sum is σ = 3212105510. Its totient is φ = 3212105508.

The previous prime is 3212105489. The next prime is 3212105513. The reversal of 3212105509 is 9055012123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3209789025 + 2316484 = 56655^2 + 1522^2 .

It is a cyclic number.

It is not a de Polignac number, because 3212105509 - 2¹⁹ = 3211581221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3212105009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606052754 + 1606052755.

It is an arithmetic number, because the mean of its divisors is an integer number (1606052755).

Almost surely, 2^3212105509 is an apocalyptic number.

It is an amenable number.

3212105509 is a deficient number, since it is larger than the sum of its proper divisors (1).

3212105509 is an equidigital number, since it uses as much as digits as its factorization.

3212105509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 3212105509 is about 56675.4400865137. The cubic root of 3212105509 is about 1475.4684727005.

The spelling of 3212105509 in words is "three billion, two hundred twelve million, one hundred five thousand, five hundred nine".