11112222122212 has 24 divisors (see below), whose sum is σ = 21069137982816. Its totient is φ = 5107669811328.

The previous prime is 11112222122207. The next prime is 11112222122303. The reversal of 11112222122212 is 21222122221111.

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

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 7 ways as a sum of consecutive naturals, for example, 1900171858 + ... + 1900177705.

It is an arithmetic number, because the mean of its divisors is an integer number (877880749284).

Almost surely, 2^{11112222122212} is an apocalyptic number.

It is an amenable number.

11112222122212 is a deficient number, since it is larger than the sum of its proper divisors (9956915860604).

11112222122212 is a wasteful number, since it uses less digits than its factorization.

11112222122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3800349627 (or 3800349625 counting only the distinct ones).

The product of its digits is 256, while the sum is 22.

Adding to 11112222122212 its reverse (21222122221111), we get a palindrome (32334344343323).

The spelling of 11112222122212 in words is "eleven trillion, one hundred twelve billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred twelve".