10020199999 has 4 divisors (see below), whose sum is σ = 10020636064. Its totient is φ = 10019763936.

The previous prime is 10020199933. The next prime is 10020200039. The reversal of 10020199999 is 99999102001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10020199999 - 2²⁹ = 9483329087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020199199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181527 + ... + 230200.

It is an arithmetic number, because the mean of its divisors is an integer number (2505159016).

Almost surely, 2^10020199999 is an apocalyptic number.

10020199999 is a deficient number, since it is larger than the sum of its proper divisors (436065).

10020199999 is an equidigital number, since it uses as much as digits as its factorization.

10020199999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436064.

The product of its (nonzero) digits is 118098, while the sum is 49.

The spelling of 10020199999 in words is "ten billion, twenty million, one hundred ninety-nine thousand, nine hundred ninety-nine".