11211011011243 has 2 divisors, whose sum is σ = 11211011011244. Its totient is φ = 11211011011242.

The previous prime is 11211011011219. The next prime is 11211011011247. The reversal of 11211011011243 is 34211011011211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11211011011243 - 2¹³ = 11211011003051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11211011011243.

It is not a weakly prime, because it can be changed into another prime (11211011011247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605505505621 + 5605505505622.

It is an arithmetic number, because the mean of its divisors is an integer number (5605505505622).

Almost surely, 2^{11211011011243} is an apocalyptic number.

11211011011243 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211011011243 is an equidigital number, since it uses as much as digits as its factorization.

11211011011243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 11211011011243 its reverse (34211011011211), we get a palindrome (45422022022454).

The spelling of 11211011011243 in words is "eleven trillion, two hundred eleven billion, eleven million, eleven thousand, two hundred forty-three".