13121312203 has 2 divisors, whose sum is σ = 13121312204. Its totient is φ = 13121312202.

The previous prime is 13121312179. The next prime is 13121312207. The reversal of 13121312203 is 30221312131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13121312203 is a prime.

It is not a weakly prime, because it can be changed into another prime (13121312207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560656101 + 6560656102.

It is an arithmetic number, because the mean of its divisors is an integer number (6560656102).

Almost surely, 2^13121312203 is an apocalyptic number.

13121312203 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121312203 is an equidigital number, since it uses as much as digits as its factorization.

13121312203 is an evil number, because the sum of its binary digits is even.

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

Adding to 13121312203 its reverse (30221312131), we get a palindrome (43342624334).

The spelling of 13121312203 in words is "thirteen billion, one hundred twenty-one million, three hundred twelve thousand, two hundred three".