210300220111309 has 2 divisors, whose sum is σ = 210300220111310. Its totient is φ = 210300220111308.

The previous prime is 210300220111307. The next prime is 210300220111363. The reversal of 210300220111309 is 903111022003012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188106793331209 + 22193426780100 = 13715203^2 + 4710990^2 .

It is a cyclic number.

It is not a de Polignac number, because 210300220111309 - 2¹ = 210300220111307 is a prime.

Together with 210300220111307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210300220111307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105150110055654 + 105150110055655.

It is an arithmetic number, because the mean of its divisors is an integer number (105150110055655).

Almost surely, 2^{210300220111309} is an apocalyptic number.

It is an amenable number.

210300220111309 is a deficient number, since it is larger than the sum of its proper divisors (1).

210300220111309 is an equidigital number, since it uses as much as digits as its factorization.

210300220111309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 210300220111309 in words is "two hundred ten trillion, three hundred billion, two hundred twenty million, one hundred eleven thousand, three hundred nine".