223112231323021 has 4 divisors (see below), whose sum is σ = 223112559390012. Its totient is φ = 223111903256032.

The previous prime is 223112231322989. The next prime is 223112231323039. The reversal of 223112231323021 is 120323132211322.

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 31339283422500 + 191772947900521 = 5598150^2 + 13848211^2 .

It is a cyclic number.

It is not a de Polignac number, because 223112231323021 - 2⁵ = 223112231322989 is a prime.

It is a super-3 number, since 3×223112231323021³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223112231323621) 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, 163011250 + ... + 164374243.

It is an arithmetic number, because the mean of its divisors is an integer number (55778139847503).

Almost surely, 2^{223112231323021} is an apocalyptic number.

It is an amenable number.

223112231323021 is a deficient number, since it is larger than the sum of its proper divisors (328066991).

223112231323021 is an equidigital number, since it uses as much as digits as its factorization.

223112231323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328066990.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 223112231323021 its reverse (120323132211322), we get a palindrome (343435363534343).

The spelling of 223112231323021 in words is "two hundred twenty-three trillion, one hundred twelve billion, two hundred thirty-one million, three hundred twenty-three thousand, twenty-one".