211120122221999 has 2 divisors, whose sum is σ = 211120122222000. Its totient is φ = 211120122221998.

The previous prime is 211120122221989. The next prime is 211120122222001. The reversal of 211120122221999 is 999122221021112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211120122221999 is a prime.

Together with 211120122222001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211120122221989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560061110999 + 105560061111000.

It is an arithmetic number, because the mean of its divisors is an integer number (105560061111000).

Almost surely, 2^{211120122221999} is an apocalyptic number.

211120122221999 is a deficient number, since it is larger than the sum of its proper divisors (1).

211120122221999 is an equidigital number, since it uses as much as digits as its factorization.

211120122221999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 44.

The spelling of 211120122221999 in words is "two hundred eleven trillion, one hundred twenty billion, one hundred twenty-two million, two hundred twenty-one thousand, nine hundred ninety-nine".