21030303199 has 2 divisors, whose sum is σ = 21030303200. Its totient is φ = 21030303198.

The previous prime is 21030303193. The next prime is 21030303221. The reversal of 21030303199 is 99130303012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21030303199 - 2¹¹ = 21030301151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21030303199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21030303193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10515151599 + 10515151600.

It is an arithmetic number, because the mean of its divisors is an integer number (10515151600).

Almost surely, 2^21030303199 is an apocalyptic number.

21030303199 is a deficient number, since it is larger than the sum of its proper divisors (1).

21030303199 is an equidigital number, since it uses as much as digits as its factorization.

21030303199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 31.

The spelling of 21030303199 in words is "twenty-one billion, thirty million, three hundred three thousand, one hundred ninety-nine".