121331203 has 12 divisors (see below), whose sum is σ = 141370032. Its totient is φ = 103829040.

The previous prime is 121331191. The next prime is 121331213. The reversal of 121331203 is 302133121.

It is not a de Polignac number, because 121331203 - 2⁹ = 121330691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121331213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35458 + ... + 38728.

It is an arithmetic number, because the mean of its divisors is an integer number (11780836).

Almost surely, 2^121331203 is an apocalyptic number.

121331203 is a deficient number, since it is larger than the sum of its proper divisors (20038829).

121331203 is an equidigital number, since it uses as much as digits as its factorization.

121331203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4042 (or 4035 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 121331203 is about 11015.0443939187. The cubic root of 121331203 is about 495.0596166675.

Adding to 121331203 its reverse (302133121), we get a palindrome (423464324).

The spelling of 121331203 in words is "one hundred twenty-one million, three hundred thirty-one thousand, two hundred three".