121012303203 has 12 divisors (see below), whose sum is σ = 190686053688. Its totient is φ = 73340789760.

The previous prime is 121012303199. The next prime is 121012303211. The reversal of 121012303203 is 302303210121.

121012303203 is a `hidden beast` number, since 12 + 101 + 230 + 320 + 3 = 666.

It is not a de Polignac number, because 121012303203 - 2² = 121012303199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121012303303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 611173150 + ... + 611173347.

It is an arithmetic number, because the mean of its divisors is an integer number (15890504474).

Almost surely, 2^121012303203 is an apocalyptic number.

121012303203 is a deficient number, since it is larger than the sum of its proper divisors (69673750485).

121012303203 is a wasteful number, since it uses less digits than its factorization.

121012303203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222346514 (or 1222346511 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 121012303203 its reverse (302303210121), we get a palindrome (423315513324).

The spelling of 121012303203 in words is "one hundred twenty-one billion, twelve million, three hundred three thousand, two hundred three".