12103121263 has 4 divisors (see below), whose sum is σ = 12108401848. Its totient is φ = 12097840680.

The previous prime is 12103121243. The next prime is 12103121273. The reversal of 12103121263 is 36212130121.

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 12103121263 - 2⁹ = 12103120751 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 (12103121243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2636853 + ... + 2641438.

It is an arithmetic number, because the mean of its divisors is an integer number (3027100462).

Almost surely, 2^12103121263 is an apocalyptic number.

12103121263 is a deficient number, since it is larger than the sum of its proper divisors (5280585).

12103121263 is an equidigital number, since it uses as much as digits as its factorization.

12103121263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5280584.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12103121263 its reverse (36212130121), we get a palindrome (48315251384).

The spelling of 12103121263 in words is "twelve billion, one hundred three million, one hundred twenty-one thousand, two hundred sixty-three".