11112122122212 has 96 divisors (see below), whose sum is σ = 28481611576320. Its totient is φ = 3356282666880.

The previous prime is 11112122122181. The next prime is 11112122122247. The reversal of 11112122122212 is 21222122121111.

It is a super-3 number, since 3×11112122122212³ (a number of 40 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81964162 + ... + 82099622.

It is an arithmetic number, because the mean of its divisors is an integer number (296683453920).

Almost surely, 2^{11112122122212} is an apocalyptic number.

11112122122212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11112122122212 is an abundant number, since it is smaller than the sum of its proper divisors (17369489454108).

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

11112122122212 is a wasteful number, since it uses less digits than its factorization.

11112122122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151153 (or 151151 counting only the distinct ones).

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

Adding to 11112122122212 its reverse (21222122121111), we get a palindrome (32334244243323).

The spelling of 11112122122212 in words is "eleven trillion, one hundred twelve billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twelve".