10121209103 has 4 divisors (see below), whose sum is σ = 10292755080. Its totient is φ = 9949663128.

The previous prime is 10121209099. The next prime is 10121209117. The reversal of 10121209103 is 30190212101.

10121209103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10121209103 - 2² = 10121209099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121209603) 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, 85772900 + ... + 85773017.

It is an arithmetic number, because the mean of its divisors is an integer number (2573188770).

Almost surely, 2^10121209103 is an apocalyptic number.

10121209103 is a deficient number, since it is larger than the sum of its proper divisors (171545977).

10121209103 is an equidigital number, since it uses as much as digits as its factorization.

10121209103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171545976.

The product of its (nonzero) digits is 108, while the sum is 20.

The spelling of 10121209103 in words is "ten billion, one hundred twenty-one million, two hundred nine thousand, one hundred three".