111212112022112 has 48 divisors (see below), whose sum is σ = 222200076429072. Its totient is φ = 54782075842560.

The previous prime is 111212112022031. The next prime is 111212112022169. The reversal of 111212112022112 is 211220211212111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24961238 + ... + 29077269.

It is an arithmetic number, because the mean of its divisors is an integer number (4629168258939).

Almost surely, 2^{111212112022112} is an apocalyptic number.

It is an amenable number.

111212112022112 is a deficient number, since it is larger than the sum of its proper divisors (110987964406960).

111212112022112 is an equidigital number, since it uses as much as digits as its factorization.

111212112022112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54039471 (or 54039463 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111212112022112 its reverse (211220211212111), we get a palindrome (322432323234223).

The spelling of 111212112022112 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred twelve million, twenty-two thousand, one hundred twelve".