13123121302 has 4 divisors (see below), whose sum is σ = 19684681956. Its totient is φ = 6561560650.

The previous prime is 13123121279. The next prime is 13123121317. The reversal of 13123121302 is 20312132131.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13123121302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280780324 + ... + 3280780327.

It is an arithmetic number, because the mean of its divisors is an integer number (4921170489).

Almost surely, 2^13123121302 is an apocalyptic number.

13123121302 is a deficient number, since it is larger than the sum of its proper divisors (6561560654).

13123121302 is an equidigital number, since it uses as much as digits as its factorization.

13123121302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6561560653.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13123121302 its reverse (20312132131), we get a palindrome (33435253433).

The spelling of 13123121302 in words is "thirteen billion, one hundred twenty-three million, one hundred twenty-one thousand, three hundred two".