1122221122212 has 48 divisors (see below), whose sum is σ = 2639192371200. Its totient is φ = 371121422880.

The previous prime is 1122221122201. The next prime is 1122221122259. The reversal of 1122221122212 is 2122211222211.

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 15 ways as a sum of consecutive naturals, for example, 6069589 + ... + 6251747.

It is an arithmetic number, because the mean of its divisors is an integer number (54983174400).

Almost surely, 2^{1122221122212} is an apocalyptic number.

1122221122212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1122221122212 is an abundant number, since it is smaller than the sum of its proper divisors (1516971248988).

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

1122221122212 is a wasteful number, since it uses less digits than its factorization.

1122221122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186216 (or 186214 counting only the distinct ones).

The product of its digits is 256, while the sum is 21.

Adding to 1122221122212 its reverse (2122211222211), we get a palindrome (3244432344423).

Subtracting 1122221122212 from its reverse (2122211222211), we obtain a palindrome (999990099999).

The spelling of 1122221122212 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred twelve".