223442404244321 has 4 divisors (see below), whose sum is σ = 223452361149444. Its totient is φ = 223432447339200.

The previous prime is 223442404244299. The next prime is 223442404244341. The reversal of 223442404244321 is 123442404244322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6666517441600 + 216775886802721 = 2581960^2 + 14723311^2 .

It is a cyclic number.

It is not a de Polignac number, because 223442404244321 - 2²² = 223442400050017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223442404244341) 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, 4978418900 + ... + 4978463781.

It is an arithmetic number, because the mean of its divisors is an integer number (55863090287361).

Almost surely, 2^{223442404244321} is an apocalyptic number.

It is an amenable number.

223442404244321 is a deficient number, since it is larger than the sum of its proper divisors (9956905123).

223442404244321 is an equidigital number, since it uses as much as digits as its factorization.

223442404244321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9956905122.

The product of its (nonzero) digits is 1179648, while the sum is 41.

Adding to 223442404244321 its reverse (123442404244322), we get a palindrome (346884808488643).

Subtracting from 223442404244321 its reverse (123442404244322), we obtain a palindrome (99999999999999).

The spelling of 223442404244321 in words is "two hundred twenty-three trillion, four hundred forty-two billion, four hundred four million, two hundred forty-four thousand, three hundred twenty-one".