11111210212 has 12 divisors (see below), whose sum is σ = 19451639340. Its totient is φ = 5553598976.

The previous prime is 11111210197. The next prime is 11111210213. The reversal of 11111210212 is 21201211111.

It is a happy number.

11111210212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7571436196 + 3539774016 = 87014^2 + 59496^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11111210192 and 11111210201.

It is not an unprimeable number, because it can be changed into a prime (11111210213) 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 3 ways as a sum of consecutive naturals, for example, 489037 + ... + 511252.

It is an arithmetic number, because the mean of its divisors is an integer number (1620969945).

Almost surely, 2^11111210212 is an apocalyptic number.

It is an amenable number.

11111210212 is a deficient number, since it is larger than the sum of its proper divisors (8340429128).

11111210212 is a wasteful number, since it uses less digits than its factorization.

11111210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003070 (or 1003068 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11111210212 its reverse (21201211111), we get a palindrome (32312421323).

The spelling of 11111210212 in words is "eleven billion, one hundred eleven million, two hundred ten thousand, two hundred twelve".