3216120211 has 4 divisors (see below), whose sum is σ = 3216246912. Its totient is φ = 3215993512.

The previous prime is 3216120209. The next prime is 3216120221. The reversal of 3216120211 is 1120216123.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1120216123 = 13 ⋅86170471.

It is a cyclic number.

It is not a de Polignac number, because 3216120211 - 2¹ = 3216120209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3216120221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10675 + ... + 80908.

It is an arithmetic number, because the mean of its divisors is an integer number (804061728).

Almost surely, 2^3216120211 is an apocalyptic number.

3216120211 is a deficient number, since it is larger than the sum of its proper divisors (126701).

3216120211 is an equidigital number, since it uses as much as digits as its factorization.

3216120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126700.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 3216120211 is about 56710.8473839000. The cubic root of 3216120211 is about 1476.0829294834.

Adding to 3216120211 its reverse (1120216123), we get a palindrome (4336336334).

The spelling of 3216120211 in words is "three billion, two hundred sixteen million, one hundred twenty thousand, two hundred eleven".