211011022120109 has 2 divisors, whose sum is σ = 211011022120110. Its totient is φ = 211011022120108.

The previous prime is 211011022120099. The next prime is 211011022120127. The reversal of 211011022120109 is 901021220110112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125225544538084 + 85785477582025 = 11190422^2 + 9262045^2 .

It is a cyclic number.

It is not a de Polignac number, because 211011022120109 - 2³² = 211006727152813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211011022120009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105505511060054 + 105505511060055.

It is an arithmetic number, because the mean of its divisors is an integer number (105505511060055).

Almost surely, 2^{211011022120109} is an apocalyptic number.

It is an amenable number.

211011022120109 is a deficient number, since it is larger than the sum of its proper divisors (1).

211011022120109 is an equidigital number, since it uses as much as digits as its factorization.

211011022120109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 211011022120109 in words is "two hundred eleven trillion, eleven billion, twenty-two million, one hundred twenty thousand, one hundred nine".