11212211111012 has 24 divisors (see below), whose sum is σ = 19708946966520. Its totient is φ = 5581138342400.

The previous prime is 11212211111009. The next prime is 11212211111041. The reversal of 11212211111012 is 21011111221211.

It can be written as a sum of positive squares in 4 ways, for example, as 3154651985956 + 8057559125056 = 1776134^2 + 2838584^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6050123 + ... + 7682994.

It is an arithmetic number, because the mean of its divisors is an integer number (821206123605).

Almost surely, 2^{11212211111012} is an apocalyptic number.

It is an amenable number.

11212211111012 is a deficient number, since it is larger than the sum of its proper divisors (8496735855508).

11212211111012 is a wasteful number, since it uses less digits than its factorization.

11212211111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13734031 (or 13734029 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11212211111012 its reverse (21011111221211), we get a palindrome (32223322332223).

The spelling of 11212211111012 in words is "eleven trillion, two hundred twelve billion, two hundred eleven million, one hundred eleven thousand, twelve".