223264588721 has 2 divisors, whose sum is σ = 223264588722. Its totient is φ = 223264588720.

The previous prime is 223264588699. The next prime is 223264588733. The reversal of 223264588721 is 127885462322.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158014995121 + 65249593600 = 397511^2 + 255440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223264588721 is a prime.

It is a super-3 number, since 3×223264588721³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223264588721.

It is not a weakly prime, because it can be changed into another prime (223264585721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111632294360 + 111632294361.

It is an arithmetic number, because the mean of its divisors is an integer number (111632294361).

Almost surely, 2^223264588721 is an apocalyptic number.

It is an amenable number.

223264588721 is a deficient number, since it is larger than the sum of its proper divisors (1).

223264588721 is an equidigital number, since it uses as much as digits as its factorization.

223264588721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2580480, while the sum is 50.

The spelling of 223264588721 in words is "two hundred twenty-three billion, two hundred sixty-four million, five hundred eighty-eight thousand, seven hundred twenty-one".