3211212109 has 6 divisors (see below), whose sum is σ = 3735491694. Its totient is φ = 2752467480.

The previous prime is 3211212107. The next prime is 3211212119. The reversal of 3211212109 is 9012121123.

It can be written as a sum of positive squares in only one way, i.e., 2435422500 + 775789609 = 49350^2 + 27853^2 .

It is not a de Polignac number, because 3211212109 - 2¹ = 3211212107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3211212109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3211212107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32767422 + ... + 32767519.

It is an arithmetic number, because the mean of its divisors is an integer number (622581949).

Almost surely, 2^3211212109 is an apocalyptic number.

It is an amenable number.

3211212109 is a deficient number, since it is larger than the sum of its proper divisors (524279585).

3211212109 is an equidigital number, since it uses as much as digits as its factorization.

3211212109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65534955 (or 65534948 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 3211212109 is about 56667.5578175026. The cubic root of 3211212109 is about 1475.3316667166.

It can be divided in two parts, 3 and 211212109, that added together give a palindrome (211212112).

The spelling of 3211212109 in words is "three billion, two hundred eleven million, two hundred twelve thousand, one hundred nine".