111212522412 has 12 divisors (see below), whose sum is σ = 259495885656. Its totient is φ = 37070840800.

The previous prime is 111212522341. The next prime is 111212522419. The reversal of 111212522412 is 214225212111.

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

It is not an unprimeable number, because it can be changed into a prime (111212522419) 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 3 ways as a sum of consecutive naturals, for example, 4633855089 + ... + 4633855112.

It is an arithmetic number, because the mean of its divisors is an integer number (21624657138).

Almost surely, 2^111212522412 is an apocalyptic number.

111212522412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111212522412 is an abundant number, since it is smaller than the sum of its proper divisors (148283363244).

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

111212522412 is a wasteful number, since it uses less digits than its factorization.

111212522412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9267710208 (or 9267710206 counting only the distinct ones).

The product of its digits is 640, while the sum is 24.

Adding to 111212522412 its reverse (214225212111), we get a palindrome (325437734523).

The spelling of 111212522412 in words is "one hundred eleven billion, two hundred twelve million, five hundred twenty-two thousand, four hundred twelve".