11212220111112 has 96 divisors (see below), whose sum is σ = 31463137045080. Its totient is φ = 3604215121920.

The previous prime is 11212220111089. The next prime is 11212220111119. The reversal of 11212220111112 is 21111102221211.

It is a happy number.

11212220111112 is a `hidden beast` number, since 11 + 212 + 220 + 111 + 112 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5464626223716 + 5747593887396 = 2337654^2 + 2397414^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11212220111119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18321939 + ... + 18924002.

Almost surely, 2^{11212220111112} is an apocalyptic number.

11212220111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11212220111112 is an abundant number, since it is smaller than the sum of its proper divisors (20250916933968).

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

11212220111112 is a wasteful number, since it uses less digits than its factorization.

11212220111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37246103 (or 37246096 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11212220111112 its reverse (21111102221211), we get a palindrome (32323322332323).

The spelling of 11212220111112 in words is "eleven trillion, two hundred twelve billion, two hundred twenty million, one hundred eleven thousand, one hundred twelve".