13121201303 has 4 divisors (see below), whose sum is σ = 14995658640. Its totient is φ = 11246743968.

The previous prime is 13121201281. The next prime is 13121201309. The reversal of 13121201303 is 30310212131.

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

It is a cyclic number.

It is not a de Polignac number, because 13121201303 - 2⁸ = 13121201047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121201309) 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, 937228658 + ... + 937228671.

It is an arithmetic number, because the mean of its divisors is an integer number (3748914660).

Almost surely, 2^13121201303 is an apocalyptic number.

13121201303 is a deficient number, since it is larger than the sum of its proper divisors (1874457337).

13121201303 is an equidigital number, since it uses as much as digits as its factorization.

13121201303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874457336.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13121201303 its reverse (30310212131), we get a palindrome (43431413434).

The spelling of 13121201303 in words is "thirteen billion, one hundred twenty-one million, two hundred one thousand, three hundred three".