12091100103 has 48 divisors (see below), whose sum is σ = 18031104000. Its totient is φ = 7803734400.

The previous prime is 12091100101. The next prime is 12091100113. The reversal of 12091100103 is 30100119021.

It is not a de Polignac number, because 12091100103 - 2¹ = 12091100101 is a prime.

It is a super-2 number, since 2×12091100103² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12091100101) 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 47 ways as a sum of consecutive naturals, for example, 20118003 + ... + 20118603.

It is an arithmetic number, because the mean of its divisors is an integer number (375648000).

Almost surely, 2^12091100103 is an apocalyptic number.

12091100103 is a deficient number, since it is larger than the sum of its proper divisors (5940003897).

12091100103 is a wasteful number, since it uses less digits than its factorization.

12091100103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092 (or 1089 counting only the distinct ones).

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

Adding to 12091100103 its reverse (30100119021), we get a palindrome (42191219124).

The spelling of 12091100103 in words is "twelve billion, ninety-one million, one hundred thousand, one hundred three".