3294787911221 has 4 divisors (see below), whose sum is σ = 3408401287500. Its totient is φ = 3181174534944.

The previous prime is 3294787911209. The next prime is 3294787911223. The reversal of 3294787911221 is 1221197874923.

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 924693792100 + 2370094119121 = 961610^2 + 1539511^2 .

It is a cyclic number.

It is not a de Polignac number, because 3294787911221 - 2⁶ = 3294787911157 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 (3294787911223) 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, 56806688096 + ... + 56806688153.

It is an arithmetic number, because the mean of its divisors is an integer number (852100321875).

Almost surely, 2^{3294787911221} is an apocalyptic number.

It is an amenable number.

3294787911221 is a deficient number, since it is larger than the sum of its proper divisors (113613376279).

3294787911221 is a wasteful number, since it uses less digits than its factorization.

3294787911221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113613376278.

The product of its digits is 3048192, while the sum is 56.

The spelling of 3294787911221 in words is "three trillion, two hundred ninety-four billion, seven hundred eighty-seven million, nine hundred eleven thousand, two hundred twenty-one".