11221212112212 has 24 divisors (see below), whose sum is σ = 26182901416896. Its totient is φ = 3740393586688.

The previous prime is 11221212112193. The next prime is 11221212112261. The reversal of 11221212112212 is 21221121212211.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 4044073 + ... + 6228719.

It is an arithmetic number, because the mean of its divisors is an integer number (1090954225704).

Almost surely, 2^{11221212112212} is an apocalyptic number.

11221212112212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11221212112212 is an abundant number, since it is smaller than the sum of its proper divisors (14961689304684).

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

11221212112212 is a wasteful number, since it uses less digits than its factorization.

11221212112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612687 (or 2612685 counting only the distinct ones).

The product of its digits is 128, while the sum is 21.

Adding to 11221212112212 its reverse (21221121212211), we get a palindrome (32442333324423).

Subtracting 11221212112212 from its reverse (21221121212211), we obtain a palindrome (9999909099999).

The spelling of 11221212112212 in words is "eleven trillion, two hundred twenty-one billion, two hundred twelve million, one hundred twelve thousand, two hundred twelve".