20012011099 has 2 divisors, whose sum is σ = 20012011100. Its totient is φ = 20012011098.

The previous prime is 20012011067. The next prime is 20012011109. The reversal of 20012011099 is 99011021002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012011099 - 2⁵ = 20012011067 is a prime.

It is not a weakly prime, because it can be changed into another prime (20012011039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006005549 + 10006005550.

It is an arithmetic number, because the mean of its divisors is an integer number (10006005550).

Almost surely, 2^20012011099 is an apocalyptic number.

20012011099 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012011099 is an equidigital number, since it uses as much as digits as its factorization.

20012011099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 20012011099 in words is "twenty billion, twelve million, eleven thousand, ninety-nine".