3221265661611 has 4 divisors (see below), whose sum is σ = 4295020882152. Its totient is φ = 2147510441072.

The previous prime is 3221265661573. The next prime is 3221265661651. The reversal of 3221265661611 is 1161665621223.

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

It is a cyclic number.

It is not a de Polignac number, because 3221265661611 - 2⁹ = 3221265661099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3221265661651) 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, 536877610266 + ... + 536877610271.

It is an arithmetic number, because the mean of its divisors is an integer number (1073755220538).

Almost surely, 2^{3221265661611} is an apocalyptic number.

3221265661611 is a deficient number, since it is larger than the sum of its proper divisors (1073755220541).

3221265661611 is a wasteful number, since it uses less digits than its factorization.

3221265661611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073755220540.

The product of its digits is 155520, while the sum is 42.

The spelling of 3221265661611 in words is "three trillion, two hundred twenty-one billion, two hundred sixty-five million, six hundred sixty-one thousand, six hundred eleven".