11212111112 has 8 divisors (see below), whose sum is σ = 21022708350. Its totient is φ = 5606055552.

The previous prime is 11212111087. The next prime is 11212111123. The reversal of 11212111112 is 21111121211.

It can be written as a sum of positive squares in only one way, i.e., 11186446756 + 25664356 = 105766^2 + 5066^2 .

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

It is a super-2 number, since 2×11212111112² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700756937 + ... + 700756952.

Almost surely, 2^11212111112 is an apocalyptic number.

It is an amenable number.

11212111112 is a deficient number, since it is larger than the sum of its proper divisors (9810597238).

11212111112 is a wasteful number, since it uses less digits than its factorization.

11212111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401513895 (or 1401513891 counting only the distinct ones).

The product of its digits is 8, while the sum is 14.

Adding to 11212111112 its reverse (21111121211), we get a palindrome (32323232323).

The spelling of 11212111112 in words is "eleven billion, two hundred twelve million, one hundred eleven thousand, one hundred twelve".