3221033261 has 4 divisors (see below), whose sum is σ = 3308088252. Its totient is φ = 3133978272.

The previous prime is 3221033251. The next prime is 3221033279. The reversal of 3221033261 is 1623301223.

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 1318416100 + 1902617161 = 36310^2 + 43619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3221033261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221033251) 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, 43527440 + ... + 43527513.

It is an arithmetic number, because the mean of its divisors is an integer number (827022063).

Almost surely, 2^3221033261 is an apocalyptic number.

It is an amenable number.

3221033261 is a deficient number, since it is larger than the sum of its proper divisors (87054991).

3221033261 is an equidigital number, since it uses as much as digits as its factorization.

3221033261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87054990.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 3221033261 is about 56754.1475224498. The cubic root of 3221033261 is about 1476.8341845215.

Adding to 3221033261 its reverse (1623301223), we get a palindrome (4844334484).

The spelling of 3221033261 in words is "three billion, two hundred twenty-one million, thirty-three thousand, two hundred sixty-one".