121113311103 has 20 divisors (see below), whose sum is σ = 181043714808. Its totient is φ = 80688046320.

The previous prime is 121113311083. The next prime is 121113311129. The reversal of 121113311103 is 301113311121.

It is not a de Polignac number, because 121113311103 - 2¹⁶ = 121113245567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121113311173) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 379813 + ... + 621678.

Almost surely, 2^121113311103 is an apocalyptic number.

121113311103 is a deficient number, since it is larger than the sum of its proper divisors (59930403705).

121113311103 is a wasteful number, since it uses less digits than its factorization.

121113311103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002996 (or 1002987 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 121113311103 its sum of digits (18), we get a palindrome (121113311121).

Adding to 121113311103 its reverse (301113311121), we get a palindrome (422226622224).

The spelling of 121113311103 in words is "one hundred twenty-one billion, one hundred thirteen million, three hundred eleven thousand, one hundred three".