23040013221221 has 16 divisors (see below), whose sum is σ = 24276977505648. Its totient is φ = 21837053145600.

The previous prime is 23040013221191. The next prime is 23040013221241. The reversal of 23040013221221 is 12212231004032.

It can be written as a sum of positive squares in 8 ways, for example, as 2314201562500 + 20725811658721 = 1521250^2 + 4552561^2 .

It is a cyclic number.

It is not a de Polignac number, because 23040013221221 - 2³⁰ = 23038939479397 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 (23040013221241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10638710 + ... + 12619911.

It is an arithmetic number, because the mean of its divisors is an integer number (1517311094103).

Almost surely, 2^{23040013221221} is an apocalyptic number.

It is an amenable number.

23040013221221 is a deficient number, since it is larger than the sum of its proper divisors (1236964284427).

23040013221221 is a wasteful number, since it uses less digits than its factorization.

23040013221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23259352.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 23040013221221 its reverse (12212231004032), we get a palindrome (35252244225253).

The spelling of 23040013221221 in words is "twenty-three trillion, forty billion, thirteen million, two hundred twenty-one thousand, two hundred twenty-one".