123100230121 has 4 divisors (see below), whose sum is σ = 134291160144. Its totient is φ = 111909300100.

The previous prime is 123100230083. The next prime is 123100230247. The reversal of 123100230121 is 121032001321.

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.

It is a cyclic number.

It is not a de Polignac number, because 123100230121 - 2¹¹ = 123100228073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123100230095 and 123100230104.

It is not an unprimeable number, because it can be changed into a prime (123100230521) 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, 5595464995 + ... + 5595465016.

It is an arithmetic number, because the mean of its divisors is an integer number (33572790036).

Almost surely, 2^123100230121 is an apocalyptic number.

123100230121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123100230121 is a deficient number, since it is larger than the sum of its proper divisors (11190930023).

123100230121 is a wasteful number, since it uses less digits than its factorization.

123100230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11190930022.

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

Adding to 123100230121 its reverse (121032001321), we get a palindrome (244132231442).

The spelling of 123100230121 in words is "one hundred twenty-three billion, one hundred million, two hundred thirty thousand, one hundred twenty-one".