211010019109 has 2 divisors, whose sum is σ = 211010019110. Its totient is φ = 211010019108.

The previous prime is 211010019091. The next prime is 211010019133. The reversal of 211010019109 is 901910010112.

Together with previous prime (211010019091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210907807009 + 102212100 = 459247^2 + 10110^2 .

It is a cyclic number.

It is not a de Polignac number, because 211010019109 - 2⁷ = 211010018981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211010019149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105505009554 + 105505009555.

It is an arithmetic number, because the mean of its divisors is an integer number (105505009555).

Almost surely, 2^211010019109 is an apocalyptic number.

It is an amenable number.

211010019109 is a deficient number, since it is larger than the sum of its proper divisors (1).

211010019109 is an equidigital number, since it uses as much as digits as its factorization.

211010019109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 25.

The spelling of 211010019109 in words is "two hundred eleven billion, ten million, nineteen thousand, one hundred nine".