23221312123 has 4 divisors (see below), whose sum is σ = 23221617120. Its totient is φ = 23221007128.

The previous prime is 23221312069. The next prime is 23221312133. The reversal of 23221312123 is 32121312232.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23221312123 - 2⁹ = 23221311611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23221312094 and 23221312103.

It is not an unprimeable number, because it can be changed into a prime (23221312133) 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, 67461 + ... + 225817.

It is an arithmetic number, because the mean of its divisors is an integer number (5805404280).

Almost surely, 2^23221312123 is an apocalyptic number.

23221312123 is a deficient number, since it is larger than the sum of its proper divisors (304997).

23221312123 is a wasteful number, since it uses less digits than its factorization.

23221312123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304996.

The product of its digits is 864, while the sum is 22.

Adding to 23221312123 its reverse (32121312232), we get a palindrome (55342624355).

The spelling of 23221312123 in words is "twenty-three billion, two hundred twenty-one million, three hundred twelve thousand, one hundred twenty-three".