21200222199589 has 2 divisors, whose sum is σ = 21200222199590. Its totient is φ = 21200222199588.

The previous prime is 21200222199517. The next prime is 21200222199593. The reversal of 21200222199589 is 98599122200212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21200195470689 + 26728900 = 4604367^2 + 5170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21200222199589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21200222197589) 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, 10600111099794 + 10600111099795.

It is an arithmetic number, because the mean of its divisors is an integer number (10600111099795).

Almost surely, 2^{21200222199589} is an apocalyptic number.

It is an amenable number.

21200222199589 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200222199589 is an equidigital number, since it uses as much as digits as its factorization.

21200222199589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 52.

The spelling of 21200222199589 in words is "twenty-one trillion, two hundred billion, two hundred twenty-two million, one hundred ninety-nine thousand, five hundred eighty-nine".