13211100421243 has 2 divisors, whose sum is σ = 13211100421244. Its totient is φ = 13211100421242.

The previous prime is 13211100421193. The next prime is 13211100421261. The reversal of 13211100421243 is 34212400111231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13211100421243 - 2²¹ = 13211098324091 is a prime.

It is not a weakly prime, because it can be changed into another prime (13211100421283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6605550210621 + 6605550210622.

It is an arithmetic number, because the mean of its divisors is an integer number (6605550210622).

Almost surely, 2^{13211100421243} is an apocalyptic number.

13211100421243 is a deficient number, since it is larger than the sum of its proper divisors (1).

13211100421243 is an equidigital number, since it uses as much as digits as its factorization.

13211100421243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 13211100421243 its reverse (34212400111231), we get a palindrome (47423500532474).

The spelling of 13211100421243 in words is "thirteen trillion, two hundred eleven billion, one hundred million, four hundred twenty-one thousand, two hundred forty-three".