121312203003 has 12 divisors (see below), whose sum is σ = 175241225640. Its totient is φ = 80869038336.

The previous prime is 121312202969. The next prime is 121312203013. The reversal of 121312203003 is 300302213121.

121312203003 is a `hidden beast` number, since 12 + 131 + 220 + 300 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-121312203003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121312203013) 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, 344998 + ... + 601371.

It is an arithmetic number, because the mean of its divisors is an integer number (14603435470).

Almost surely, 2^121312203003 is an apocalyptic number.

121312203003 is a deficient number, since it is larger than the sum of its proper divisors (53929022637).

121312203003 is a wasteful number, since it uses less digits than its factorization.

121312203003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960618 (or 960615 counting only the distinct ones).

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

Adding to 121312203003 its reverse (300302213121), we get a palindrome (421614416124).

The spelling of 121312203003 in words is "one hundred twenty-one billion, three hundred twelve million, two hundred three thousand, three".