13320221234143 has 4 divisors (see below), whose sum is σ = 13324809670128. Its totient is φ = 13315632798160.

The previous prime is 13320221234107. The next prime is 13320221234161. The reversal of 13320221234143 is 34143212202331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13320221234143 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 (13320221234743) 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, 2294213638 + ... + 2294219443.

It is an arithmetic number, because the mean of its divisors is an integer number (3331202417532).

Almost surely, 2^{13320221234143} is an apocalyptic number.

13320221234143 is a deficient number, since it is larger than the sum of its proper divisors (4588435985).

13320221234143 is an equidigital number, since it uses as much as digits as its factorization.

13320221234143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4588435984.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 13320221234143 its reverse (34143212202331), we get a palindrome (47463433436474).

The spelling of 13320221234143 in words is "thirteen trillion, three hundred twenty billion, two hundred twenty-one million, two hundred thirty-four thousand, one hundred forty-three".