11121211104 has 48 divisors (see below), whose sum is σ = 29205671040. Its totient is φ = 3705484160.

The previous prime is 11121211039. The next prime is 11121211121. The reversal of 11121211104 is 40111212111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212509 + ... + 259619.

It is an arithmetic number, because the mean of its divisors is an integer number (608451480).

Almost surely, 2^11121211104 is an apocalyptic number.

It is an amenable number.

11121211104 is an abundant number, since it is smaller than the sum of its proper divisors (18084459936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11121211104 is a wasteful number, since it uses less digits than its factorization.

11121211104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49583 (or 49575 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11121211104 its reverse (40111212111), we get a palindrome (51232423215).

The spelling of 11121211104 in words is "eleven billion, one hundred twenty-one million, two hundred eleven thousand, one hundred four".