211109005049 has 2 divisors, whose sum is σ = 211109005050. Its totient is φ = 211109005048.

The previous prime is 211109005033. The next prime is 211109005061. The reversal of 211109005049 is 940500901112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202641324649 + 8467680400 = 450157^2 + 92020^2 .

It is a cyclic number.

It is not a de Polignac number, because 211109005049 - 2⁴ = 211109005033 is a prime.

It is not a weakly prime, because it can be changed into another prime (211109005249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105554502524 + 105554502525.

It is an arithmetic number, because the mean of its divisors is an integer number (105554502525).

Almost surely, 2^211109005049 is an apocalyptic number.

It is an amenable number.

211109005049 is a deficient number, since it is larger than the sum of its proper divisors (1).

211109005049 is an equidigital number, since it uses as much as digits as its factorization.

211109005049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 32.

The spelling of 211109005049 in words is "two hundred eleven billion, one hundred nine million, five thousand, forty-nine".