223115134767221 has 2 divisors, whose sum is σ = 223115134767222. Its totient is φ = 223115134767220.

The previous prime is 223115134767097. The next prime is 223115134767223. The reversal of 223115134767221 is 122767431511322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112625899126225 + 110489235640996 = 10612535^2 + 10511386^2 .

It is a cyclic number.

It is not a de Polignac number, because 223115134767221 - 2³⁰ = 223114061025397 is a prime.

It is a super-3 number, since 3×223115134767221³ (a number of 44 digits) contains 333 as substring.

Together with 223115134767223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223115134767223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111557567383610 + 111557567383611.

It is an arithmetic number, because the mean of its divisors is an integer number (111557567383611).

Almost surely, 2^{223115134767221} is an apocalyptic number.

It is an amenable number.

223115134767221 is a deficient number, since it is larger than the sum of its proper divisors (1).

223115134767221 is an equidigital number, since it uses as much as digits as its factorization.

223115134767221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 47.

The spelling of 223115134767221 in words is "two hundred twenty-three trillion, one hundred fifteen billion, one hundred thirty-four million, seven hundred sixty-seven thousand, two hundred twenty-one".