21202102099 has 2 divisors, whose sum is σ = 21202102100. Its totient is φ = 21202102098.

The previous prime is 21202102073. The next prime is 21202102111. The reversal of 21202102099 is 99020120212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21202102099 - 2¹⁷ = 21201971027 is a prime.

It is not a weakly prime, because it can be changed into another prime (21202102049) 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, 10601051049 + 10601051050.

It is an arithmetic number, because the mean of its divisors is an integer number (10601051050).

Almost surely, 2^21202102099 is an apocalyptic number.

21202102099 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202102099 is an equidigital number, since it uses as much as digits as its factorization.

21202102099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 21202102099 in words is "twenty-one billion, two hundred two million, one hundred two thousand, ninety-nine".