211110321109 has 2 divisors, whose sum is σ = 211110321110. Its totient is φ = 211110321108.

The previous prime is 211110321011. The next prime is 211110321199. The reversal of 211110321109 is 901123011112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211028146884 + 82174225 = 459378^2 + 9065^2 .

It is a cyclic number.

It is not a de Polignac number, because 211110321109 - 2²³ = 211101932501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211110321109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211110321199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555160554 + 105555160555.

It is an arithmetic number, because the mean of its divisors is an integer number (105555160555).

Almost surely, 2^211110321109 is an apocalyptic number.

It is an amenable number.

211110321109 is a deficient number, since it is larger than the sum of its proper divisors (1).

211110321109 is an equidigital number, since it uses as much as digits as its factorization.

211110321109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 211110321109 in words is "two hundred eleven billion, one hundred ten million, three hundred twenty-one thousand, one hundred nine".