121003320103 has 4 divisors (see below), whose sum is σ = 128121162480. Its totient is φ = 113885477728.

The previous prime is 121003320079. The next prime is 121003320209. The reversal of 121003320103 is 301023300121.

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-121003320103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121003320803) 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 3 ways as a sum of consecutive naturals, for example, 3558921163 + ... + 3558921196.

It is an arithmetic number, because the mean of its divisors is an integer number (32030290620).

Almost surely, 2^121003320103 is an apocalyptic number.

121003320103 is a deficient number, since it is larger than the sum of its proper divisors (7117842377).

121003320103 is an equidigital number, since it uses as much as digits as its factorization.

121003320103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7117842376.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 121003320103 its reverse (301023300121), we get a palindrome (422026620224).

The spelling of 121003320103 in words is "one hundred twenty-one billion, three million, three hundred twenty thousand, one hundred three".