11100111112 has 8 divisors (see below), whose sum is σ = 20812708350. Its totient is φ = 5550055552.

The previous prime is 11100111101. The next prime is 11100111151. The reversal of 11100111112 is 21111100111.

It can be written as a sum of positive squares in only one way, i.e., 10800613476 + 299497636 = 103926^2 + 17306^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 693756937 + ... + 693756952.

Almost surely, 2^11100111112 is an apocalyptic number.

It is an amenable number.

11100111112 is a deficient number, since it is larger than the sum of its proper divisors (9712597238).

11100111112 is a wasteful number, since it uses less digits than its factorization.

11100111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387513895 (or 1387513891 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 11100111112 its reverse (21111100111), we get a palindrome (32211211223).

The spelling of 11100111112 in words is "eleven billion, one hundred million, one hundred eleven thousand, one hundred twelve".