11211121202201 has 2 divisors, whose sum is σ = 11211121202202. Its totient is φ = 11211121202200.

The previous prime is 11211121202131. The next prime is 11211121202221. The reversal of 11211121202201 is 10220212111211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6384334172176 + 4826787030025 = 2526724^2 + 2196995^2 .

It is a cyclic number.

It is not a de Polignac number, because 11211121202201 - 2¹⁰ = 11211121201177 is a prime.

It is a super-2 number, since 2×11211121202201² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11211121202201.

It is not a weakly prime, because it can be changed into another prime (11211121202221) 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, 5605560601100 + 5605560601101.

It is an arithmetic number, because the mean of its divisors is an integer number (5605560601101).

Almost surely, 2^{11211121202201} is an apocalyptic number.

It is an amenable number.

11211121202201 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211121202201 is an equidigital number, since it uses as much as digits as its factorization.

11211121202201 is an odious number, because the sum of its binary digits is odd.

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

Adding to 11211121202201 its reverse (10220212111211), we get a palindrome (21431333313412).

The spelling of 11211121202201 in words is "eleven trillion, two hundred eleven billion, one hundred twenty-one million, two hundred two thousand, two hundred one".