2111302110209 has 4 divisors (see below), whose sum is σ = 2235496352004. Its totient is φ = 1987107868416.

The previous prime is 2111302110199. The next prime is 2111302110227. The reversal of 2111302110209 is 9020112031112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1517570218609 + 593731891600 = 1231897^2 + 770540^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111302110209 - 2¹² = 2111302106113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2111302113209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62097120872 + ... + 62097120905.

It is an arithmetic number, because the mean of its divisors is an integer number (558874088001).

Almost surely, 2^{2111302110209} is an apocalyptic number.

It is an amenable number.

2111302110209 is a deficient number, since it is larger than the sum of its proper divisors (124194241795).

2111302110209 is a wasteful number, since it uses less digits than its factorization.

2111302110209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124194241794.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 2111302110209 in words is "two trillion, one hundred eleven billion, three hundred two million, one hundred ten thousand, two hundred nine".