2011211999 has 2 divisors, whose sum is σ = 2011212000. Its totient is φ = 2011211998.

The previous prime is 2011211987. The next prime is 2011212053. The reversal of 2011211999 is 9991121102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2011211999 - 2⁸ = 2011211743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2010211999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005605999 + 1005606000.

It is an arithmetic number, because the mean of its divisors is an integer number (1005606000).

Almost surely, 2^2011211999 is an apocalyptic number.

2011211999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011211999 is an equidigital number, since it uses as much as digits as its factorization.

2011211999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 35.

The square root of 2011211999 is about 44846.5383167977. The cubic root of 2011211999 is about 1262.2710362680.

The spelling of 2011211999 in words is "two billion, eleven million, two hundred eleven thousand, nine hundred ninety-nine".