21210200219959 has 2 divisors, whose sum is σ = 21210200219960. Its totient is φ = 21210200219958.

The previous prime is 21210200219953. The next prime is 21210200220017. The reversal of 21210200219959 is 95991200201212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21210200219959 - 2¹¹ = 21210200217911 is a prime.

It is a super-3 number, since 3×21210200219959³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21210200219953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605100109979 + 10605100109980.

It is an arithmetic number, because the mean of its divisors is an integer number (10605100109980).

Almost surely, 2^{21210200219959} is an apocalyptic number.

21210200219959 is a deficient number, since it is larger than the sum of its proper divisors (1).

21210200219959 is an equidigital number, since it uses as much as digits as its factorization.

21210200219959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 43.

The spelling of 21210200219959 in words is "twenty-one trillion, two hundred ten billion, two hundred million, two hundred nineteen thousand, nine hundred fifty-nine".