11031122011 has 24 divisors (see below), whose sum is σ = 14546550480. Its totient is φ = 8268547392.

The previous prime is 11031121967. The next prime is 11031122017. The reversal of 11031122011 is 11022113011.

It is a happy number.

It is not a de Polignac number, because 11031122011 - 2⁷ = 11031121883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 11031121982 and 11031122000.

It is not an unprimeable number, because it can be changed into a prime (11031122017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 443616 + ... + 467821.

It is an arithmetic number, because the mean of its divisors is an integer number (606106270).

Almost surely, 2^11031122011 is an apocalyptic number.

11031122011 is a deficient number, since it is larger than the sum of its proper divisors (3515428469).

11031122011 is a wasteful number, since it uses less digits than its factorization.

11031122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911483 (or 911476 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11031122011 its reverse (11022113011), we get a palindrome (22053235022).

The spelling of 11031122011 in words is "eleven billion, thirty-one million, one hundred twenty-two thousand, eleven".