13221342861 has 12 divisors (see below), whose sum is σ = 18215464896. Its totient is φ = 8529896760.

The previous prime is 13221342851. The next prime is 13221342899. The reversal of 13221342861 is 16824312231.

It is not a de Polignac number, because 13221342861 - 2¹³ = 13221334669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221342851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2290101 + ... + 2295866.

It is an arithmetic number, because the mean of its divisors is an integer number (1517955408).

Almost surely, 2^13221342861 is an apocalyptic number.

It is an amenable number.

13221342861 is a deficient number, since it is larger than the sum of its proper divisors (4994122035).

13221342861 is an equidigital number, since it uses as much as digits as its factorization.

13221342861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4586032 (or 4586001 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The spelling of 13221342861 in words is "thirteen billion, two hundred twenty-one million, three hundred forty-two thousand, eight hundred sixty-one".