12121130103 has 4 divisors (see below), whose sum is σ = 16161506808. Its totient is φ = 8080753400.

The previous prime is 12121130093. The next prime is 12121130129. The reversal of 12121130103 is 30103112121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12121130103 - 2²¹ = 12119032951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121130803) 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, 2020188348 + ... + 2020188353.

It is an arithmetic number, because the mean of its divisors is an integer number (4040376702).

Almost surely, 2^12121130103 is an apocalyptic number.

12121130103 is a deficient number, since it is larger than the sum of its proper divisors (4040376705).

12121130103 is an equidigital number, since it uses as much as digits as its factorization.

12121130103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040376704.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12121130103 its reverse (30103112121), we get a palindrome (42224242224).

The spelling of 12121130103 in words is "twelve billion, one hundred twenty-one million, one hundred thirty thousand, one hundred three".