21230130199 has 2 divisors, whose sum is σ = 21230130200. Its totient is φ = 21230130198.

The previous prime is 21230130191. The next prime is 21230130217. The reversal of 21230130199 is 99103103212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21230130199 - 2³ = 21230130191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21230130199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21230130191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10615065099 + 10615065100.

It is an arithmetic number, because the mean of its divisors is an integer number (10615065100).

Almost surely, 2^21230130199 is an apocalyptic number.

21230130199 is a deficient number, since it is larger than the sum of its proper divisors (1).

21230130199 is an equidigital number, since it uses as much as digits as its factorization.

21230130199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The spelling of 21230130199 in words is "twenty-one billion, two hundred thirty million, one hundred thirty thousand, one hundred ninety-nine".