223112011321 has 2 divisors, whose sum is σ = 223112011322. Its totient is φ = 223112011320.

The previous prime is 223112011319. The next prime is 223112011373. The reversal of 223112011321 is 123110211322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204610570921 + 18501440400 = 452339^2 + 136020^2 .

It is a cyclic number.

It is not a de Polignac number, because 223112011321 - 2¹ = 223112011319 is a prime.

It is a super-3 number, since 3×223112011321³ (a number of 35 digits) contains 333 as substring.

Together with 223112011319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (223112011391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111556005660 + 111556005661.

It is an arithmetic number, because the mean of its divisors is an integer number (111556005661).

Almost surely, 2^223112011321 is an apocalyptic number.

It is an amenable number.

223112011321 is a deficient number, since it is larger than the sum of its proper divisors (1).

223112011321 is an equidigital number, since it uses as much as digits as its factorization.

223112011321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 223112011321 its reverse (123110211322), we get a palindrome (346222222643).

The spelling of 223112011321 in words is "two hundred twenty-three billion, one hundred twelve million, eleven thousand, three hundred twenty-one".