210220099 has 2 divisors, whose sum is σ = 210220100. Its totient is φ = 210220098.

The previous prime is 210220081. The next prime is 210220111. The reversal of 210220099 is 990022012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 210220099 - 2¹¹ = 210218051 is a prime.

It is not a weakly prime, because it can be changed into another prime (210220019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105110049 + 105110050.

It is an arithmetic number, because the mean of its divisors is an integer number (105110050).

Almost surely, 2^210220099 is an apocalyptic number.

210220099 is a deficient number, since it is larger than the sum of its proper divisors (1).

210220099 is an equidigital number, since it uses as much as digits as its factorization.

210220099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 210220099 is about 14498.9688943731. The cubic root of 210220099 is about 594.5997817031.

It can be divided in two parts, 2102 and 20099, that added together give a square (22201 = 149²).

The spelling of 210220099 in words is "two hundred ten million, two hundred twenty thousand, ninety-nine".