121203313303 has 4 divisors (see below), whose sum is σ = 121456347840. Its totient is φ = 120950278768.

The previous prime is 121203313261. The next prime is 121203313321. The reversal of 121203313303 is 303313302121.

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-121203313303 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 (121203314303) 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 3 ways as a sum of consecutive naturals, for example, 126516550 + ... + 126517507.

It is an arithmetic number, because the mean of its divisors is an integer number (30364086960).

Almost surely, 2^121203313303 is an apocalyptic number.

121203313303 is a deficient number, since it is larger than the sum of its proper divisors (253034537).

121203313303 is an equidigital number, since it uses as much as digits as its factorization.

121203313303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253034536.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 121203313303 its reverse (303313302121), we get a palindrome (424516615424).

The spelling of 121203313303 in words is "one hundred twenty-one billion, two hundred three million, three hundred thirteen thousand, three hundred three".