23144204424021 has 4 divisors (see below), whose sum is σ = 30858939232032. Its totient is φ = 15429469616012.

The previous prime is 23144204424007. The next prime is 23144204424043. The reversal of 23144204424021 is 12042440244132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23144204424021 - 2¹¹ = 23144204421973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23144204424091) 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, 3857367404001 + ... + 3857367404006.

It is an arithmetic number, because the mean of its divisors is an integer number (7714734808008).

Almost surely, 2^{23144204424021} is an apocalyptic number.

It is an amenable number.

23144204424021 is a deficient number, since it is larger than the sum of its proper divisors (7714734808011).

23144204424021 is an equidigital number, since it uses as much as digits as its factorization.

23144204424021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7714734808010.

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 23144204424021 its reverse (12042440244132), we get a palindrome (35186644668153).

The spelling of 23144204424021 in words is "twenty-three trillion, one hundred forty-four billion, two hundred four million, four hundred twenty-four thousand, twenty-one".