11021122111 has 2 divisors, whose sum is σ = 11021122112. Its totient is φ = 11021122110.

The previous prime is 11021122069. The next prime is 11021122127. The reversal of 11021122111 is 11122112011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11021122111 - 2⁹ = 11021121599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11021122091 and 11021122100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11021122141) 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, 5510561055 + 5510561056.

It is an arithmetic number, because the mean of its divisors is an integer number (5510561056).

Almost surely, 2^11021122111 is an apocalyptic number.

11021122111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021122111 is an equidigital number, since it uses as much as digits as its factorization.

11021122111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11021122111 its reverse (11122112011), we get a palindrome (22143234122).

The spelling of 11021122111 in words is "eleven billion, twenty-one million, one hundred twenty-two thousand, one hundred eleven".