112012221212172 has 48 divisors (see below), whose sum is σ = 290493694271200. Its totient is φ = 37325624878080.

The previous prime is 112012221212149. The next prime is 112012221212173. The reversal of 112012221212172 is 271212122210211.

112012221212172 is a `hidden beast` number, since 1 + 1 + 201 + 2 + 221 + 21 + 217 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (112012221212173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163297729 + ... + 163982232.

Almost surely, 2^{112012221212172} is an apocalyptic number.

112012221212172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

112012221212172 is an abundant number, since it is smaller than the sum of its proper divisors (178481473059028).

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

112012221212172 is a wasteful number, since it uses less digits than its factorization.

112012221212172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327283143 (or 327283135 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

Adding to 112012221212172 its reverse (271212122210211), we get a palindrome (383224343422383).

The spelling of 112012221212172 in words is "one hundred twelve trillion, twelve billion, two hundred twenty-one million, two hundred twelve thousand, one hundred seventy-two".