11211012100243 has 2 divisors, whose sum is σ = 11211012100244. Its totient is φ = 11211012100242.

The previous prime is 11211012100217. The next prime is 11211012100291. The reversal of 11211012100243 is 34200121011211.

It is a weak prime.

It is an emirp because it is prime and its reverse (34200121011211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11211012100243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11211012100243.

It is not a weakly prime, because it can be changed into another prime (11211012100643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605506050121 + 5605506050122.

It is an arithmetic number, because the mean of its divisors is an integer number (5605506050122).

Almost surely, 2^{11211012100243} is an apocalyptic number.

11211012100243 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211012100243 is an equidigital number, since it uses as much as digits as its factorization.

11211012100243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 11211012100243 its reverse (34200121011211), we get a palindrome (45411133111454).

The spelling of 11211012100243 in words is "eleven trillion, two hundred eleven billion, twelve million, one hundred thousand, two hundred forty-three".