11211110222201 has 2 divisors, whose sum is σ = 11211110222202. Its totient is φ = 11211110222200.

The previous prime is 11211110222189. The next prime is 11211110222251. The reversal of 11211110222201 is 10222201111211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7431103260025 + 3780006962176 = 2726005^2 + 1944224^2 .

It is a cyclic number.

It is not a de Polignac number, because 11211110222201 - 2¹⁰ = 11211110221177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11211110222201.

It is not a weakly prime, because it can be changed into another prime (11211110222251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605555111100 + 5605555111101.

It is an arithmetic number, because the mean of its divisors is an integer number (5605555111101).

Almost surely, 2^{11211110222201} is an apocalyptic number.

It is an amenable number.

11211110222201 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211110222201 is an equidigital number, since it uses as much as digits as its factorization.

11211110222201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11211110222201 its reverse (10222201111211), we get a palindrome (21433311333412).

The spelling of 11211110222201 in words is "eleven trillion, two hundred eleven billion, one hundred ten million, two hundred twenty-two thousand, two hundred one".