121304205203 has 4 divisors (see below), whose sum is σ = 121735893048. Its totient is φ = 120872517360.

The previous prime is 121304205173. The next prime is 121304205259. The reversal of 121304205203 is 302502403121.

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 121304205203 - 2¹² = 121304201107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121304405203) 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, 215843501 + ... + 215844062.

It is an arithmetic number, because the mean of its divisors is an integer number (30433973262).

Almost surely, 2^121304205203 is an apocalyptic number.

121304205203 is a deficient number, since it is larger than the sum of its proper divisors (431687845).

121304205203 is an equidigital number, since it uses as much as digits as its factorization.

121304205203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431687844.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 121304205203 its reverse (302502403121), we get a palindrome (423806608324).

The spelling of 121304205203 in words is "one hundred twenty-one billion, three hundred four million, two hundred five thousand, two hundred three".