12123011103 has 8 divisors (see below), whose sum is σ = 18473159808. Its totient is φ = 6927434904.

The previous prime is 12123011081. The next prime is 12123011167. The reversal of 12123011103 is 30111032121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12123011103 - 2⁵ = 12123011071 is a prime.

It is a super-2 number, since 2×12123011103² (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 (12123011003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288643101 + ... + 288643142.

It is an arithmetic number, because the mean of its divisors is an integer number (2309144976).

Almost surely, 2^12123011103 is an apocalyptic number.

12123011103 is a deficient number, since it is larger than the sum of its proper divisors (6350148705).

12123011103 is an equidigital number, since it uses as much as digits as its factorization.

12123011103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577286253.

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

Adding to 12123011103 its reverse (30111032121), we get a palindrome (42234043224).

The spelling of 12123011103 in words is "twelve billion, one hundred twenty-three million, eleven thousand, one hundred three".