223230239521 has 2 divisors, whose sum is σ = 223230239522. Its totient is φ = 223230239520.

The previous prime is 223230239497. The next prime is 223230239527. The reversal of 223230239521 is 125932032322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184878500625 + 38351738896 = 429975^2 + 195836^2 .

It is a cyclic number.

It is not a de Polignac number, because 223230239521 - 2¹⁷ = 223230108449 is a prime.

It is a super-3 number, since 3×223230239521³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (223230239527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111615119760 + 111615119761.

It is an arithmetic number, because the mean of its divisors is an integer number (111615119761).

Almost surely, 2^223230239521 is an apocalyptic number.

It is an amenable number.

223230239521 is a deficient number, since it is larger than the sum of its proper divisors (1).

223230239521 is an equidigital number, since it uses as much as digits as its factorization.

223230239521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 34.

The spelling of 223230239521 in words is "two hundred twenty-three billion, two hundred thirty million, two hundred thirty-nine thousand, five hundred twenty-one".