223110330721 has 2 divisors, whose sum is σ = 223110330722. Its totient is φ = 223110330720.

The previous prime is 223110330673. The next prime is 223110330731. The reversal of 223110330721 is 127033011322.

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., 207594140625 + 15516190096 = 455625^2 + 124564^2 .

It is a cyclic number.

It is not a de Polignac number, because 223110330721 - 2¹⁹ = 223109806433 is a prime.

It is a super-3 number, since 3×223110330721³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (223110330731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111555165360 + 111555165361.

It is an arithmetic number, because the mean of its divisors is an integer number (111555165361).

Almost surely, 2^223110330721 is an apocalyptic number.

It is an amenable number.

223110330721 is a deficient number, since it is larger than the sum of its proper divisors (1).

223110330721 is an equidigital number, since it uses as much as digits as its factorization.

223110330721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The spelling of 223110330721 in words is "two hundred twenty-three billion, one hundred ten million, three hundred thirty thousand, seven hundred twenty-one".