1000020099 has 32 divisors (see below), whose sum is σ = 1459261440. Its totient is φ = 605478528.

The previous prime is 1000020029. The next prime is 1000020107. The reversal of 1000020099 is 9900200001.

It is a happy number.

1000020099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1000020099 - 2¹⁷ = 999889027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000020029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 694222 + ... + 695660.

It is an arithmetic number, because the mean of its divisors is an integer number (45601920).

Almost surely, 2^1000020099 is an apocalyptic number.

1000020099 is a deficient number, since it is larger than the sum of its proper divisors (459241341).

1000020099 is a wasteful number, since it uses less digits than its factorization.

1000020099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1000020099 is about 31623.0943931804. The cubic root of 1000020099 is about 1000.0066996218.

The spelling of 1000020099 in words is "one billion, twenty thousand, ninety-nine".