1111221120212 has 12 divisors (see below), whose sum is σ = 2222442240480. Its totient is φ = 476237622936.

The previous prime is 1111221120193. The next prime is 1111221120221. The reversal of 1111221120212 is 2120211221111.

1111221120212 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19843234262 + ... + 19843234317.

It is an arithmetic number, because the mean of its divisors is an integer number (185203520040).

Almost surely, 2^{1111221120212} is an apocalyptic number.

It is an amenable number.

1111221120212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1111221120212 is a wasteful number, since it uses less digits than its factorization.

1111221120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39686468590 (or 39686468588 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1111221120212 its reverse (2120211221111), we get a palindrome (3231432341323).

The spelling of 1111221120212 in words is "one trillion, one hundred eleven billion, two hundred twenty-one million, one hundred twenty thousand, two hundred twelve".