221236809144319 has 2 divisors, whose sum is σ = 221236809144320. Its totient is φ = 221236809144318.

The previous prime is 221236809144311. The next prime is 221236809144359. The reversal of 221236809144319 is 913441908632122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221236809144319 - 2³ = 221236809144311 is a prime.

It is a super-2 number, since 2×221236809144319² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221236809144319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221236809144311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110618404572159 + 110618404572160.

It is an arithmetic number, because the mean of its divisors is an integer number (110618404572160).

Almost surely, 2^{221236809144319} is an apocalyptic number.

221236809144319 is a deficient number, since it is larger than the sum of its proper divisors (1).

221236809144319 is an equidigital number, since it uses as much as digits as its factorization.

221236809144319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 221236809144319 in words is "two hundred twenty-one trillion, two hundred thirty-six billion, eight hundred nine million, one hundred forty-four thousand, three hundred nineteen".