11212040546009 has 2 divisors, whose sum is σ = 11212040546010. Its totient is φ = 11212040546008.

The previous prime is 11212040545973. The next prime is 11212040546023. The reversal of 11212040546009 is 90064504021211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7854863838409 + 3357176707600 = 2802653^2 + 1832260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11212040546009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11212040546009.

It is not a weakly prime, because it can be changed into another prime (11212040546309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606020273004 + 5606020273005.

It is an arithmetic number, because the mean of its divisors is an integer number (5606020273005).

Almost surely, 2^{11212040546009} is an apocalyptic number.

It is an amenable number.

11212040546009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212040546009 is an equidigital number, since it uses as much as digits as its factorization.

11212040546009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 11212040546009 in words is "eleven trillion, two hundred twelve billion, forty million, five hundred forty-six thousand, nine".