11312301201209 has 2 divisors, whose sum is σ = 11312301201210. Its totient is φ = 11312301201208.

The previous prime is 11312301201199. The next prime is 11312301201251. The reversal of 11312301201209 is 90210210321311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10651104541609 + 661196659600 = 3263603^2 + 813140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11312301201209 is a prime.

It is not a weakly prime, because it can be changed into another prime (11312301201109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656150600604 + 5656150600605.

It is an arithmetic number, because the mean of its divisors is an integer number (5656150600605).

Almost surely, 2^{11312301201209} is an apocalyptic number.

It is an amenable number.

11312301201209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11312301201209 is an equidigital number, since it uses as much as digits as its factorization.

11312301201209 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 26.

The spelling of 11312301201209 in words is "eleven trillion, three hundred twelve billion, three hundred one million, two hundred one thousand, two hundred nine".