12123203101 has 4 divisors (see below), whose sum is σ = 12650298912. Its totient is φ = 11596107292.

The previous prime is 12123203017. The next prime is 12123203107. The reversal of 12123203101 is 10130232121.

12123203101 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10130232121 = 29 ⋅349318349.

It is a cyclic number.

It is not a de Polignac number, because 12123203101 - 2²³ = 12114814493 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 (12123203107) 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, 263547871 + ... + 263547916.

It is an arithmetic number, because the mean of its divisors is an integer number (3162574728).

Almost surely, 2^12123203101 is an apocalyptic number.

It is an amenable number.

12123203101 is a deficient number, since it is larger than the sum of its proper divisors (527095811).

12123203101 is an equidigital number, since it uses as much as digits as its factorization.

12123203101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527095810.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12123203101 its reverse (10130232121), we get a palindrome (22253435222).

The spelling of 12123203101 in words is "twelve billion, one hundred twenty-three million, two hundred three thousand, one hundred one".