11011220012 has 36 divisors (see below), whose sum is σ = 21351246840. Its totient is φ = 4963900032.

The previous prime is 11011219987. The next prime is 11011220023. The reversal of 11011220012 is 21002211011.

It is a junction number, because it is equal to n+sod(n) for n = 11011219975 and 11011220002.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 160337 + ... + 218472.

It is an arithmetic number, because the mean of its divisors is an integer number (593090190).

Almost surely, 2^11011220012 is an apocalyptic number.

It is an amenable number.

11011220012 is a deficient number, since it is larger than the sum of its proper divisors (10340026828).

11011220012 is a wasteful number, since it uses less digits than its factorization.

11011220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378882 (or 378867 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11011220012 its reverse (21002211011), we get a palindrome (32013431023).

Subtracting 11011220012 from its reverse (21002211011), we obtain a palindrome (9990990999).

The spelling of 11011220012 in words is "eleven billion, eleven million, two hundred twenty thousand, twelve".