12111020100103 has 4 divisors (see below), whose sum is σ = 12111055585920. Its totient is φ = 12110984614288.

The previous prime is 12111020100097. The next prime is 12111020100131. The reversal of 12111020100103 is 30100102011121.

It is a happy number.

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-12111020100103 is a prime.

It is a super-2 number, since 2×12111020100103² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111020103103) 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, 17225950 + ... + 17915227.

It is an arithmetic number, because the mean of its divisors is an integer number (3027763896480).

Almost surely, 2^{12111020100103} is an apocalyptic number.

12111020100103 is a deficient number, since it is larger than the sum of its proper divisors (35485817).

12111020100103 is an equidigital number, since it uses as much as digits as its factorization.

12111020100103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35485816.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12111020100103 its reverse (30100102011121), we get a palindrome (42211122111224).

The spelling of 12111020100103 in words is "twelve trillion, one hundred eleven billion, twenty million, one hundred thousand, one hundred three".