11021011011911 has 2 divisors, whose sum is σ = 11021011011912. Its totient is φ = 11021011011910.

The previous prime is 11021011011893. The next prime is 11021011011917. The reversal of 11021011011911 is 11911011012011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11021011011911 - 2⁴² = 6622964500807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11021011011917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510505505955 + 5510505505956.

It is an arithmetic number, because the mean of its divisors is an integer number (5510505505956).

Almost surely, 2^{11021011011911} is an apocalyptic number.

11021011011911 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021011011911 is an equidigital number, since it uses as much as digits as its factorization.

11021011011911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 20.

Adding to 11021011011911 its reverse (11911011012011), we get a palindrome (22932022023922).

The spelling of 11021011011911 in words is "eleven trillion, twenty-one billion, eleven million, eleven thousand, nine hundred eleven".