221332112389 has 2 divisors, whose sum is σ = 221332112390. Its totient is φ = 221332112388.

The previous prime is 221332112293. The next prime is 221332112399. The reversal of 221332112389 is 983211233122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117277481764 + 104054630625 = 342458^2 + 322575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221332112389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221332112399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110666056194 + 110666056195.

It is an arithmetic number, because the mean of its divisors is an integer number (110666056195).

Almost surely, 2^221332112389 is an apocalyptic number.

It is an amenable number.

221332112389 is a deficient number, since it is larger than the sum of its proper divisors (1).

221332112389 is an equidigital number, since it uses as much as digits as its factorization.

221332112389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 37.

The spelling of 221332112389 in words is "two hundred twenty-one billion, three hundred thirty-two million, one hundred twelve thousand, three hundred eighty-nine".