11202201121 has 2 divisors, whose sum is σ = 11202201122. Its totient is φ = 11202201120.

The previous prime is 11202201107. The next prime is 11202201139. The reversal of 11202201121 is 12110220211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6940722721 + 4261478400 = 83311^2 + 65280^2 .

It is an emirp because it is prime and its reverse (12110220211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11202201121 - 2¹⁹ = 11201676833 is a prime.

It is not a weakly prime, because it can be changed into another prime (11202205121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5601100560 + 5601100561.

It is an arithmetic number, because the mean of its divisors is an integer number (5601100561).

Almost surely, 2^11202201121 is an apocalyptic number.

It is an amenable number.

11202201121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11202201121 is an equidigital number, since it uses as much as digits as its factorization.

11202201121 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 13.

Adding to 11202201121 its reverse (12110220211), we get a palindrome (23312421332).

The spelling of 11202201121 in words is "eleven billion, two hundred two million, two hundred one thousand, one hundred twenty-one".