211030113109 has 2 divisors, whose sum is σ = 211030113110. Its totient is φ = 211030113108.

The previous prime is 211030113103. The next prime is 211030113131. The reversal of 211030113109 is 901311030112.

It is an a-pointer prime, because the next prime (211030113131) can be obtained adding 211030113109 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128257096900 + 82773016209 = 358130^2 + 287703^2 .

It is a cyclic number.

It is not a de Polignac number, because 211030113109 - 2¹³ = 211030104917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211030113109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211030113103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105515056554 + 105515056555.

It is an arithmetic number, because the mean of its divisors is an integer number (105515056555).

Almost surely, 2^211030113109 is an apocalyptic number.

It is an amenable number.

211030113109 is a deficient number, since it is larger than the sum of its proper divisors (1).

211030113109 is an equidigital number, since it uses as much as digits as its factorization.

211030113109 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 22.

The spelling of 211030113109 in words is "two hundred eleven billion, thirty million, one hundred thirteen thousand, one hundred nine".