21200204359 has 2 divisors, whose sum is σ = 21200204360. Its totient is φ = 21200204358.

The previous prime is 21200204239. The next prime is 21200204369. The reversal of 21200204359 is 95340200212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21200204359 - 2¹³ = 21200196167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21200204369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600102179 + 10600102180.

It is an arithmetic number, because the mean of its divisors is an integer number (10600102180).

Almost surely, 2^21200204359 is an apocalyptic number.

21200204359 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200204359 is an equidigital number, since it uses as much as digits as its factorization.

21200204359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 21200204359 in words is "twenty-one billion, two hundred million, two hundred four thousand, three hundred fifty-nine".