13121223334 has 4 divisors (see below), whose sum is σ = 19681835004. Its totient is φ = 6560611666.

The previous prime is 13121223331. The next prime is 13121223343. The reversal of 13121223334 is 43332212131.

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

It is a junction number, because it is equal to n+sod(n) for n = 13121223299 and 13121223308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121223331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280305832 + ... + 3280305835.

It is an arithmetic number, because the mean of its divisors is an integer number (4920458751).

Almost surely, 2^13121223334 is an apocalyptic number.

13121223334 is a deficient number, since it is larger than the sum of its proper divisors (6560611670).

13121223334 is an equidigital number, since it uses as much as digits as its factorization.

13121223334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6560611669.

The product of its digits is 2592, while the sum is 25.

Adding to 13121223334 its reverse (43332212131), we get a palindrome (56453435465).

The spelling of 13121223334 in words is "thirteen billion, one hundred twenty-one million, two hundred twenty-three thousand, three hundred thirty-four".