11111222212212 has 12 divisors (see below), whose sum is σ = 25926185161856. Its totient is φ = 3703740737400.

The previous prime is 11111222212151. The next prime is 11111222212219. The reversal of 11111222212212 is 21221222211111.

11111222212212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111222212219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462967592164 + ... + 462967592187.

Almost surely, 2^{11111222212212} is an apocalyptic number.

11111222212212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11111222212212 is an abundant number, since it is smaller than the sum of its proper divisors (14814962949644).

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

11111222212212 is a wasteful number, since it uses less digits than its factorization.

11111222212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925935184358 (or 925935184356 counting only the distinct ones).

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

Adding to 11111222212212 its reverse (21221222211111), we get a palindrome (32332444423323).

The spelling of 11111222212212 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-two million, two hundred twelve thousand, two hundred twelve".