13221331290 has 96 divisors (see below), whose sum is σ = 36467108496. Its totient is φ = 3311953920.

The previous prime is 13221331289. The next prime is 13221331313. The reversal of 13221331290 is 9213312231.

13221331290 is a `hidden beast` number, since 1 + 322 + 1 + 331 + 2 + 9 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 8609427369 + 4611903921 = 92787^2 + 67911^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 819744 + ... + 835716.

Almost surely, 2^13221331290 is an apocalyptic number.

13221331290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13221331290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18233554248).

13221331290 is an abundant number, since it is smaller than the sum of its proper divisors (23245777206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13221331290 is a wasteful number, since it uses less digits than its factorization.

13221331290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16544 (or 16541 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The spelling of 13221331290 in words is "thirteen billion, two hundred twenty-one million, three hundred thirty-one thousand, two hundred ninety".