23123321313221 has 16 divisors (see below), whose sum is σ = 24690271457280. Its totient is φ = 21603189207600.

The previous prime is 23123321313167. The next prime is 23123321313227. The reversal of 23123321313221 is 12231312332132.

It is a cyclic number.

It is not a de Polignac number, because 23123321313221 - 2³⁴ = 23106141444037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123321313227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62556896 + ... + 62925446.

It is an arithmetic number, because the mean of its divisors is an integer number (1543141966080).

Almost surely, 2^{23123321313221} is an apocalyptic number.

It is an amenable number.

23123321313221 is a deficient number, since it is larger than the sum of its proper divisors (1566950144059).

23123321313221 is a wasteful number, since it uses less digits than its factorization.

23123321313221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432056.

The product of its digits is 7776, while the sum is 29.

Adding to 23123321313221 its reverse (12231312332132), we get a palindrome (35354633645353).

The spelling of 23123321313221 in words is "twenty-three trillion, one hundred twenty-three billion, three hundred twenty-one million, three hundred thirteen thousand, two hundred twenty-one".