11112122212212 has 24 divisors (see below), whose sum is σ = 29632325899456. Its totient is φ = 3174892060608.

The previous prime is 11112122212199. The next prime is 11112122212231. The reversal of 11112122212212 is 21221222121111.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66143584513 + ... + 66143584680.

Almost surely, 2^{11112122212212} is an apocalyptic number.

11112122212212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11112122212212 is an abundant number, since it is smaller than the sum of its proper divisors (18520203687244).

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

11112122212212 is a wasteful number, since it uses less digits than its factorization.

11112122212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132287169207 (or 132287169205 counting only the distinct ones).

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

Adding to 11112122212212 its reverse (21221222121111), we get a palindrome (32333344333323).

The spelling of 11112122212212 in words is "eleven trillion, one hundred twelve billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twelve".