13121001223303 has 4 divisors (see below), whose sum is σ = 13121023481920. Its totient is φ = 13120978964688.

The previous prime is 13121001223289. The next prime is 13121001223339. The reversal of 13121001223303 is 30332210012131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13121001223303 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 (13121001223903) 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, 10220343 + ... + 11432296.

It is an arithmetic number, because the mean of its divisors is an integer number (3280255870480).

Almost surely, 2^{13121001223303} is an apocalyptic number.

13121001223303 is a deficient number, since it is larger than the sum of its proper divisors (22258617).

13121001223303 is an equidigital number, since it uses as much as digits as its factorization.

13121001223303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22258616.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 13121001223303 its reverse (30332210012131), we get a palindrome (43453211235434).

The spelling of 13121001223303 in words is "thirteen trillion, one hundred twenty-one billion, one million, two hundred twenty-three thousand, three hundred three".