13221534043 has 8 divisors (see below), whose sum is σ = 13881592080. Its totient is φ = 12575085600.

The previous prime is 13221534041. The next prime is 13221534059. The reversal of 13221534043 is 34043512231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13221534043 - 2¹ = 13221534041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13221534041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3400408 + ... + 3404293.

It is an arithmetic number, because the mean of its divisors is an integer number (1735199010).

Almost surely, 2^13221534043 is an apocalyptic number.

13221534043 is a deficient number, since it is larger than the sum of its proper divisors (660058037).

13221534043 is an equidigital number, since it uses as much as digits as its factorization.

13221534043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6804797.

The product of its (nonzero) digits is 8640, while the sum is 28.

The spelling of 13221534043 in words is "thirteen billion, two hundred twenty-one million, five hundred thirty-four thousand, forty-three".