121311320310203 has 4 divisors (see below), whose sum is σ = 121317288319920. Its totient is φ = 121305352300488.

The previous prime is 121311320310197. The next prime is 121311320310221. The reversal of 121311320310203 is 302013023113121.

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 121311320310203 - 2¹² = 121311320306107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121311320313203) 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, 2983974368 + ... + 2984015021.

It is an arithmetic number, because the mean of its divisors is an integer number (30329322079980).

Almost surely, 2^{121311320310203} is an apocalyptic number.

121311320310203 is a deficient number, since it is larger than the sum of its proper divisors (5968009717).

121311320310203 is an equidigital number, since it uses as much as digits as its factorization.

121311320310203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5968009716.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 121311320310203 its reverse (302013023113121), we get a palindrome (423324343423324).

The spelling of 121311320310203 in words is "one hundred twenty-one trillion, three hundred eleven billion, three hundred twenty million, three hundred ten thousand, two hundred three".