11212212211012 has 12 divisors (see below), whose sum is σ = 19621433027196. Its totient is φ = 5606088488960.

The previous prime is 11212212211007. The next prime is 11212212211019. The reversal of 11212212211012 is 21011221221211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7724753070336 + 3487459140676 = 2779344^2 + 1867474^2 .

It is a super-2 number, since 2×11212212211012² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11212212211019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2916253 + ... + 5561380.

It is an arithmetic number, because the mean of its divisors is an integer number (1635119418933).

Almost surely, 2^{11212212211012} is an apocalyptic number.

It is an amenable number.

11212212211012 is a deficient number, since it is larger than the sum of its proper divisors (8409220816184).

11212212211012 is a wasteful number, since it uses less digits than its factorization.

11212212211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8808278 (or 8808276 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11212212211012 its reverse (21011221221211), we get a palindrome (32223433432223).

The spelling of 11212212211012 in words is "eleven trillion, two hundred twelve billion, two hundred twelve million, two hundred eleven thousand, twelve".