11101212112201 has 2 divisors, whose sum is σ = 11101212112202. Its totient is φ = 11101212112200.

The previous prime is 11101212112187. The next prime is 11101212112217. The reversal of 11101212112201 is 10221121210111.

It is an a-pointer prime, because the next prime (11101212112217) can be obtained adding 11101212112201 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7695991447225 + 3405220664976 = 2774165^2 + 1845324^2 .

It is a cyclic number.

It is not a de Polignac number, because 11101212112201 - 2⁷ = 11101212112073 is a prime.

It is not a weakly prime, because it can be changed into another prime (11101212112231) 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, 5550606056100 + 5550606056101.

It is an arithmetic number, because the mean of its divisors is an integer number (5550606056101).

Almost surely, 2^{11101212112201} is an apocalyptic number.

It is an amenable number.

11101212112201 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101212112201 is an equidigital number, since it uses as much as digits as its factorization.

11101212112201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 11101212112201 its reverse (10221121210111), we get a palindrome (21322333322312).

The spelling of 11101212112201 in words is "eleven trillion, one hundred one billion, two hundred twelve million, one hundred twelve thousand, two hundred one".