3287987113221 has 18 divisors (see below), whose sum is σ = 4817148679590. Its totient is φ = 2161118260560.

The previous prime is 3287987113219. The next prime is 3287987113231. The reversal of 3287987113221 is 1223117897823.

3287987113221 is a `hidden beast` number, since 328 + 7 + 9 + 87 + 1 + 13 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2756712312225 + 531274800996 = 1660335^2 + 728886^2 .

It is not a de Polignac number, because 3287987113221 - 2¹ = 3287987113219 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3287987113231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 36190686 + ... + 36281423.

Almost surely, 2^{3287987113221} is an apocalyptic number.

It is an amenable number.

3287987113221 is a deficient number, since it is larger than the sum of its proper divisors (1529161566369).

3287987113221 is an equidigital number, since it uses as much as digits as its factorization.

3287987113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72472257 (or 72472183 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The spelling of 3287987113221 in words is "three trillion, two hundred eighty-seven billion, nine hundred eighty-seven million, one hundred thirteen thousand, two hundred twenty-one".