221303222113187 has 2 divisors, whose sum is σ = 221303222113188. Its totient is φ = 221303222113186.

The previous prime is 221303222113097. The next prime is 221303222113189. The reversal of 221303222113187 is 781311222303122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221303222113187 - 2¹⁰ = 221303222112163 is a prime.

It is a super-2 number, since 2×221303222113187² (a number of 29 digits) contains 22 as substring.

Together with 221303222113189, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221303222113187.

It is not a weakly prime, because it can be changed into another prime (221303222113189) 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, 110651611056593 + 110651611056594.

It is an arithmetic number, because the mean of its divisors is an integer number (110651611056594).

Almost surely, 2^{221303222113187} is an apocalyptic number.

221303222113187 is a deficient number, since it is larger than the sum of its proper divisors (1).

221303222113187 is an equidigital number, since it uses as much as digits as its factorization.

221303222113187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 221303222113187 in words is "two hundred twenty-one trillion, three hundred three billion, two hundred twenty-two million, one hundred thirteen thousand, one hundred eighty-seven".