121231203 has 8 divisors (see below), whose sum is σ = 166010448. Its totient is φ = 78636384.

The previous prime is 121231181. The next prime is 121231237. The reversal of 121231203 is 302132121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121231203 - 2⁶ = 121231139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121231003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545976 + ... + 546197.

It is an arithmetic number, because the mean of its divisors is an integer number (20751306).

Almost surely, 2^121231203 is an apocalyptic number.

121231203 is a deficient number, since it is larger than the sum of its proper divisors (44779245).

121231203 is a wasteful number, since it uses less digits than its factorization.

121231203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092213.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 121231203 is about 11010.5042118878. The cubic root of 121231203 is about 494.9235715078.

Adding to 121231203 its reverse (302132121), we get a palindrome (423363324).

The spelling of 121231203 in words is "one hundred twenty-one million, two hundred thirty-one thousand, two hundred three".