3217971121 has 4 divisors (see below), whose sum is σ = 3223548772. Its totient is φ = 3212393472.

The previous prime is 3217971103. The next prime is 3217971143. The reversal of 3217971121 is 1211797123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2776130721 + 441840400 = 52689^2 + 21020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3217971121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3217971221) 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, 2787960 + ... + 2789113.

It is an arithmetic number, because the mean of its divisors is an integer number (805887193).

Almost surely, 2^3217971121 is an apocalyptic number.

It is an amenable number.

3217971121 is a deficient number, since it is larger than the sum of its proper divisors (5577651).

3217971121 is an equidigital number, since it uses as much as digits as its factorization.

3217971121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5577650.

The product of its digits is 5292, while the sum is 34.

The square root of 3217971121 is about 56727.1638723460. The cubic root of 3217971121 is about 1476.3660421084.

The spelling of 3217971121 in words is "three billion, two hundred seventeen million, nine hundred seventy-one thousand, one hundred twenty-one".