121313330103 has 24 divisors (see below), whose sum is σ = 188201035008. Its totient is φ = 69306582576.

The previous prime is 121313330093. The next prime is 121313330123. The reversal of 121313330103 is 301033313121.

It is not a de Polignac number, because 121313330103 - 2¹⁰ = 121313329079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 121313330103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121313330123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 593650 + ... + 771392.

It is an arithmetic number, because the mean of its divisors is an integer number (7841709792).

Almost surely, 2^121313330103 is an apocalyptic number.

121313330103 is a deficient number, since it is larger than the sum of its proper divisors (66887704905).

121313330103 is a wasteful number, since it uses less digits than its factorization.

121313330103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182403 (or 182396 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 121313330103 its reverse (301033313121), we get a palindrome (422346643224).

The spelling of 121313330103 in words is "one hundred twenty-one billion, three hundred thirteen million, three hundred thirty thousand, one hundred three".