111222001212 has 24 divisors (see below), whose sum is σ = 296592003456. Its totient is φ = 31777714608.

The previous prime is 111222001211. The next prime is 111222001291. The reversal of 111222001212 is 212100222111.

It is a junction number, because it is equal to n+sod(n) for n = 111222001191 and 111222001200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222001211) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 662035638 + ... + 662035805.

It is an arithmetic number, because the mean of its divisors is an integer number (12358000144).

Almost surely, 2^111222001212 is an apocalyptic number.

111222001212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111222001212 is an abundant number, since it is smaller than the sum of its proper divisors (185370002244).

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

111222001212 is a wasteful number, since it uses less digits than its factorization.

111222001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324071457 (or 1324071455 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111222001212 its reverse (212100222111), we get a palindrome (323322223323).

The spelling of 111222001212 in words is "one hundred eleven billion, two hundred twenty-two million, one thousand, two hundred twelve".