13212434123 has 4 divisors (see below), whose sum is σ = 15099924720. Its totient is φ = 11324943528.

The previous prime is 13212434107. The next prime is 13212434201. The reversal of 13212434123 is 32143421231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32143421231 = 19447 ⋅1652873.

It is a cyclic number.

It is not a de Polignac number, because 13212434123 - 2⁴ = 13212434107 is a prime.

It is a super-2 number, since 2×13212434123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13212434092 and 13212434101.

It is not an unprimeable number, because it can be changed into a prime (13212436123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 943745288 + ... + 943745301.

It is an arithmetic number, because the mean of its divisors is an integer number (3774981180).

Almost surely, 2^13212434123 is an apocalyptic number.

13212434123 is a deficient number, since it is larger than the sum of its proper divisors (1887490597).

13212434123 is an equidigital number, since it uses as much as digits as its factorization.

13212434123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887490596.

The product of its digits is 3456, while the sum is 26.

Adding to 13212434123 its reverse (32143421231), we get a palindrome (45355855354).

The spelling of 13212434123 in words is "thirteen billion, two hundred twelve million, four hundred thirty-four thousand, one hundred twenty-three".