20011020099 has 16 divisors (see below), whose sum is σ = 30910697472. Its totient is φ = 11278225728.

The previous prime is 20011020089. The next prime is 20011020109. The reversal of 20011020099 is 99002011002.

It is an interprime number because it is at equal distance from previous prime (20011020089) and next prime (20011020109).

It is not a de Polignac number, because 20011020099 - 2⁴ = 20011020083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20011020089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6525219 + ... + 6528284.

It is an arithmetic number, because the mean of its divisors is an integer number (1931918592).

Almost surely, 2^20011020099 is an apocalyptic number.

20011020099 is a deficient number, since it is larger than the sum of its proper divisors (10899677373).

20011020099 is a wasteful number, since it uses less digits than its factorization.

20011020099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13053586.

The product of its (nonzero) digits is 324, while the sum is 24.

The spelling of 20011020099 in words is "twenty billion, eleven million, twenty thousand, ninety-nine".