11211001111201 has 2 divisors, whose sum is σ = 11211001111202. Its totient is φ = 11211001111200.

The previous prime is 11211001111129. The next prime is 11211001111207. The reversal of 11211001111201 is 10211110011211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7151340291601 + 4059660819600 = 2674199^2 + 2014860^2 .

It is a cyclic number.

It is not a de Polignac number, because 11211001111201 - 2¹¹ = 11211001109153 is a prime.

It is not a weakly prime, because it can be changed into another prime (11211001111207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605500555600 + 5605500555601.

It is an arithmetic number, because the mean of its divisors is an integer number (5605500555601).

Almost surely, 2^{11211001111201} is an apocalyptic number.

It is an amenable number.

11211001111201 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211001111201 is an equidigital number, since it uses as much as digits as its factorization.

11211001111201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11211001111201 its reverse (10211110011211), we get a palindrome (21422111122412).

The spelling of 11211001111201 in words is "eleven trillion, two hundred eleven billion, one million, one hundred eleven thousand, two hundred one".