23121223103 has 4 divisors (see below), whose sum is σ = 25223152488. Its totient is φ = 21019293720.

The previous prime is 23121223093. The next prime is 23121223187. The reversal of 23121223103 is 30132212132.

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 23121223103 - 2²⁴ = 23104445887 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 (23121228103) 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, 1050964676 + ... + 1050964697.

It is an arithmetic number, because the mean of its divisors is an integer number (6305788122).

Almost surely, 2^23121223103 is an apocalyptic number.

23121223103 is a deficient number, since it is larger than the sum of its proper divisors (2101929385).

23121223103 is a wasteful number, since it uses less digits than its factorization.

23121223103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101929384.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23121223103 its reverse (30132212132), we get a palindrome (53253435235).

The spelling of 23121223103 in words is "twenty-three billion, one hundred twenty-one million, two hundred twenty-three thousand, one hundred three".