11122211011 has 2 divisors, whose sum is σ = 11122211012. Its totient is φ = 11122211010.

The previous prime is 11122210991. The next prime is 11122211041. The reversal of 11122211011 is 11011222111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11122211011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11122210982 and 11122211000.

It is not a weakly prime, because it can be changed into another prime (11122211041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561105505 + 5561105506.

It is an arithmetic number, because the mean of its divisors is an integer number (5561105506).

Almost surely, 2^11122211011 is an apocalyptic number.

11122211011 is a deficient number, since it is larger than the sum of its proper divisors (1).

11122211011 is an equidigital number, since it uses as much as digits as its factorization.

11122211011 is an evil number, because the sum of its binary digits is even.

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

Adding to 11122211011 its reverse (11011222111), we get a palindrome (22133433122).

The spelling of 11122211011 in words is "eleven billion, one hundred twenty-two million, two hundred eleven thousand, eleven".