11212122112212 has 96 divisors (see below), whose sum is σ = 31783884088320. Its totient is φ = 3003012288000.

The previous prime is 11212122112171. The next prime is 11212122112393. The reversal of 11212122112212 is 21221122121211.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15282262 + ... + 15999117.

It is an arithmetic number, because the mean of its divisors is an integer number (331082125920).

Almost surely, 2^{11212122112212} is an apocalyptic number.

11212122112212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11212122112212 is an abundant number, since it is smaller than the sum of its proper divisors (20571761976108).

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

11212122112212 is a wasteful number, since it uses less digits than its factorization.

11212122112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31281661 (or 31281659 counting only the distinct ones).

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

Adding to 11212122112212 its reverse (21221122121211), we get a palindrome (32433244233423).

The spelling of 11212122112212 in words is "eleven trillion, two hundred twelve billion, one hundred twenty-two million, one hundred twelve thousand, two hundred twelve".