21000210219799 has 2 divisors, whose sum is σ = 21000210219800. Its totient is φ = 21000210219798.

The previous prime is 21000210219733. The next prime is 21000210219827. The reversal of 21000210219799 is 99791201200012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21000210219799 - 2¹⁷ = 21000210088727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21000210319799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500105109899 + 10500105109900.

It is an arithmetic number, because the mean of its divisors is an integer number (10500105109900).

Almost surely, 2^{21000210219799} is an apocalyptic number.

21000210219799 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000210219799 is an equidigital number, since it uses as much as digits as its factorization.

21000210219799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 43.

The spelling of 21000210219799 in words is "twenty-one trillion, two hundred ten million, two hundred nineteen thousand, seven hundred ninety-nine".