11212120222201 has 2 divisors, whose sum is σ = 11212120222202. Its totient is φ = 11212120222200.

The previous prime is 11212120222151. The next prime is 11212120222211. The reversal of 11212120222201 is 10222202121211.

11212120222201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6365407896576 + 4846712325625 = 2522976^2 + 2201525^2 .

It is an emirp because it is prime and its reverse (10222202121211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11212120222201 - 2⁹ = 11212120221689 is a prime.

It is a super-2 number, since 2×11212120222201² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11212120222211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606060111100 + 5606060111101.

It is an arithmetic number, because the mean of its divisors is an integer number (5606060111101).

Almost surely, 2^{11212120222201} is an apocalyptic number.

It is an amenable number.

11212120222201 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212120222201 is an equidigital number, since it uses as much as digits as its factorization.

11212120222201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11212120222201 its reverse (10222202121211), we get a palindrome (21434322343412).

The spelling of 11212120222201 in words is "eleven trillion, two hundred twelve billion, one hundred twenty million, two hundred twenty-two thousand, two hundred one".