211022202109 has 2 divisors, whose sum is σ = 211022202110. Its totient is φ = 211022202108.

The previous prime is 211022202103. The next prime is 211022202163. The reversal of 211022202109 is 901202220112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163062516100 + 47959686009 = 403810^2 + 218997^2 .

It is a cyclic number.

It is not a de Polignac number, because 211022202109 - 2¹¹ = 211022200061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211022202109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211022202103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105511101054 + 105511101055.

It is an arithmetic number, because the mean of its divisors is an integer number (105511101055).

Almost surely, 2^211022202109 is an apocalyptic number.

It is an amenable number.

211022202109 is a deficient number, since it is larger than the sum of its proper divisors (1).

211022202109 is an equidigital number, since it uses as much as digits as its factorization.

211022202109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 211022202109 in words is "two hundred eleven billion, twenty-two million, two hundred two thousand, one hundred nine".