11312110101209 has 2 divisors, whose sum is σ = 11312110101210. Its totient is φ = 11312110101208.

The previous prime is 11312110101197. The next prime is 11312110101239. The reversal of 11312110101209 is 90210101121311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6699374539225 + 4612735561984 = 2588315^2 + 2147728^2 .

It is an emirp because it is prime and its reverse (90210101121311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11312110101209 - 2²⁸ = 11311841665753 is a prime.

It is not a weakly prime, because it can be changed into another prime (11312110101239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656055050604 + 5656055050605.

It is an arithmetic number, because the mean of its divisors is an integer number (5656055050605).

Almost surely, 2^{11312110101209} is an apocalyptic number.

It is an amenable number.

11312110101209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11312110101209 is an equidigital number, since it uses as much as digits as its factorization.

11312110101209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 23.

The spelling of 11312110101209 in words is "eleven trillion, three hundred twelve billion, one hundred ten million, one hundred one thousand, two hundred nine".