223143104221 has 4 divisors (see below), whose sum is σ = 223144142652. Its totient is φ = 223142065792.

The previous prime is 223143104189. The next prime is 223143104237. The reversal of 223143104221 is 122401341322.

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 can be written as a sum of positive squares in 2 ways, for example, as 94218302500 + 128924801721 = 306950^2 + 359061^2 .

It is a cyclic number.

It is not a de Polignac number, because 223143104221 - 2⁵ = 223143104189 is a prime.

It is a super-3 number, since 3×223143104221³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223143194221) 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, 63646 + ... + 671071.

It is an arithmetic number, because the mean of its divisors is an integer number (55786035663).

Almost surely, 2^223143104221 is an apocalyptic number.

It is an amenable number.

223143104221 is a deficient number, since it is larger than the sum of its proper divisors (1038431).

223143104221 is an equidigital number, since it uses as much as digits as its factorization.

223143104221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038430.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 223143104221 its reverse (122401341322), we get a palindrome (345544445543).

The spelling of 223143104221 in words is "two hundred twenty-three billion, one hundred forty-three million, one hundred four thousand, two hundred twenty-one".