121123012203 has 16 divisors (see below), whose sum is σ = 180732451200. Its totient is φ = 80167746600.

The previous prime is 121123012189. The next prime is 121123012223. The reversal of 121123012203 is 302210321121.

121123012203 is a `hidden beast` number, since 1 + 211 + 230 + 1 + 220 + 3 = 666.

It is not a de Polignac number, because 121123012203 - 2¹² = 121123008107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121123012223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16133073 + ... + 16140578.

It is an arithmetic number, because the mean of its divisors is an integer number (11295778200).

Almost surely, 2^121123012203 is an apocalyptic number.

121123012203 is a deficient number, since it is larger than the sum of its proper divisors (59609438997).

121123012203 is a wasteful number, since it uses less digits than its factorization.

121123012203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32273799 (or 32273793 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121123012203 its reverse (302210321121), we get a palindrome (423333333324).

The spelling of 121123012203 in words is "one hundred twenty-one billion, one hundred twenty-three million, twelve thousand, two hundred three".