21114224123 has 4 divisors (see below), whose sum is σ = 21194506608. Its totient is φ = 21033941640.

The previous prime is 21114224099. The next prime is 21114224177. The reversal of 21114224123 is 32142241112.

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 21114224123 - 2⁶ = 21114224059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21114214123) 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, 40140848 + ... + 40141373.

It is an arithmetic number, because the mean of its divisors is an integer number (5298626652).

Almost surely, 2^21114224123 is an apocalyptic number.

21114224123 is a deficient number, since it is larger than the sum of its proper divisors (80282485).

21114224123 is an equidigital number, since it uses as much as digits as its factorization.

21114224123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80282484.

The product of its digits is 768, while the sum is 23.

Adding to 21114224123 its reverse (32142241112), we get a palindrome (53256465235).

The spelling of 21114224123 in words is "twenty-one billion, one hundred fourteen million, two hundred twenty-four thousand, one hundred twenty-three".