121201103203003 has 4 divisors (see below), whose sum is σ = 127580108634760. Its totient is φ = 114822097771248.

The previous prime is 121201103202989. The next prime is 121201103203007. The reversal of 121201103203003 is 300302301102121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121201103203003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 6379005431737 = 121201103203003 / (1 + 2 + 1 + 2 + 0 + 1 + 1 + 0 + 3 + 2 + 0 + 3 + 0 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121201103203007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3189502715850 + ... + 3189502715887.

It is an arithmetic number, because the mean of its divisors is an integer number (31895027158690).

Almost surely, 2^{121201103203003} is an apocalyptic number.

121201103203003 is a deficient number, since it is larger than the sum of its proper divisors (6379005431757).

121201103203003 is an equidigital number, since it uses as much as digits as its factorization.

121201103203003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6379005431756.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121201103203003 its reverse (300302301102121), we get a palindrome (421503404305124).

The spelling of 121201103203003 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred three million, two hundred three thousand, three".