121320013203203 has 4 divisors (see below), whose sum is σ = 121324755440928. Its totient is φ = 121315270965480.

The previous prime is 121320013203187. The next prime is 121320013203211. The reversal of 121320013203203 is 302302310023121.

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 121320013203203 - 2⁴ = 121320013203187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121320013202203) 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, 2371080488 + ... + 2371131653.

It is an arithmetic number, because the mean of its divisors is an integer number (30331188860232).

Almost surely, 2^{121320013203203} is an apocalyptic number.

121320013203203 is a deficient number, since it is larger than the sum of its proper divisors (4742237725).

121320013203203 is an equidigital number, since it uses as much as digits as its factorization.

121320013203203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4742237724.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 121320013203203 its reverse (302302310023121), we get a palindrome (423622323226324).

The spelling of 121320013203203 in words is "one hundred twenty-one trillion, three hundred twenty billion, thirteen million, two hundred three thousand, two hundred three".