11020121611 has 2 divisors, whose sum is σ = 11020121612. Its totient is φ = 11020121610.

The previous prime is 11020121561. The next prime is 11020121627. The reversal of 11020121611 is 11612102011.

It is an a-pointer prime, because the next prime (11020121627) can be obtained adding 11020121611 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11020121611 - 2¹⁷ = 11019990539 is a prime.

It is not a weakly prime, because it can be changed into another prime (11020121641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510060805 + 5510060806.

It is an arithmetic number, because the mean of its divisors is an integer number (5510060806).

Almost surely, 2^11020121611 is an apocalyptic number.

11020121611 is a deficient number, since it is larger than the sum of its proper divisors (1).

11020121611 is an equidigital number, since it uses as much as digits as its factorization.

11020121611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 11020121611 its reverse (11612102011), we get a palindrome (22632223622).

The spelling of 11020121611 in words is "eleven billion, twenty million, one hundred twenty-one thousand, six hundred eleven".