21200199913859 has 2 divisors, whose sum is σ = 21200199913860. Its totient is φ = 21200199913858.

The previous prime is 21200199913829. The next prime is 21200199913883. The reversal of 21200199913859 is 95831999100212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21200199913859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21200199913798 and 21200199913807.

It is not a weakly prime, because it can be changed into another prime (21200199913829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600099956929 + 10600099956930.

It is an arithmetic number, because the mean of its divisors is an integer number (10600099956930).

Almost surely, 2^{21200199913859} is an apocalyptic number.

21200199913859 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200199913859 is an equidigital number, since it uses as much as digits as its factorization.

21200199913859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3149280, while the sum is 59.

The spelling of 21200199913859 in words is "twenty-one trillion, two hundred billion, one hundred ninety-nine million, nine hundred thirteen thousand, eight hundred fifty-nine".