223499635109 has 2 divisors, whose sum is σ = 223499635110. Its totient is φ = 223499635108.

The previous prime is 223499635039. The next prime is 223499635111. The reversal of 223499635109 is 901536994322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201671050084 + 21828585025 = 449078^2 + 147745^2 .

It is a cyclic number.

It is not a de Polignac number, because 223499635109 - 2²⁴ = 223482857893 is a prime.

It is a super-2 number, since 2×223499635109² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 223499635111, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223499634109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111749817554 + 111749817555.

It is an arithmetic number, because the mean of its divisors is an integer number (111749817555).

Almost surely, 2^223499635109 is an apocalyptic number.

It is an amenable number.

223499635109 is a deficient number, since it is larger than the sum of its proper divisors (1).

223499635109 is an equidigital number, since it uses as much as digits as its factorization.

223499635109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3149280, while the sum is 53.

The spelling of 223499635109 in words is "two hundred twenty-three billion, four hundred ninety-nine million, six hundred thirty-five thousand, one hundred nine".