11212111102201 has 2 divisors, whose sum is σ = 11212111102202. Its totient is φ = 11212111102200.

The previous prime is 11212111102117. The next prime is 11212111102219. The reversal of 11212111102201 is 10220111121211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10845297968400 + 366813133801 = 3293220^2 + 605651^2 .

It is an emirp because it is prime and its reverse (10220111121211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11212111102201 - 2¹⁷ = 11212110971129 is a prime.

It is a super-2 number, since 2×11212111102201² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11212111102261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606055551100 + 5606055551101.

It is an arithmetic number, because the mean of its divisors is an integer number (5606055551101).

Almost surely, 2^{11212111102201} is an apocalyptic number.

It is an amenable number.

11212111102201 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212111102201 is an equidigital number, since it uses as much as digits as its factorization.

11212111102201 is an evil number, because the sum of its binary digits is even.

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

Adding to 11212111102201 its reverse (10220111121211), we get a palindrome (21432222223412).

The spelling of 11212111102201 in words is "eleven trillion, two hundred twelve billion, one hundred eleven million, one hundred two thousand, two hundred one".