13211224343123 has 4 divisors (see below), whose sum is σ = 13224266026608. Its totient is φ = 13198182659640.

The previous prime is 13211224343063. The next prime is 13211224343167. The reversal of 13211224343123 is 32134342211231.

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-13211224343123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13211224343123.

It is not an unprimeable number, because it can be changed into a prime (13211224348123) 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, 6520840223 + ... + 6520842248.

It is an arithmetic number, because the mean of its divisors is an integer number (3306066506652).

Almost surely, 2^{13211224343123} is an apocalyptic number.

13211224343123 is a deficient number, since it is larger than the sum of its proper divisors (13041683485).

13211224343123 is a wasteful number, since it uses less digits than its factorization.

13211224343123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13041683484.

The product of its digits is 20736, while the sum is 32.

Adding to 13211224343123 its reverse (32134342211231), we get a palindrome (45345566554354).

The spelling of 13211224343123 in words is "thirteen trillion, two hundred eleven billion, two hundred twenty-four million, three hundred forty-three thousand, one hundred twenty-three".