12216106272 has 48 divisors (see below), whose sum is σ = 32095429632. Its totient is φ = 4068460800.

The previous prime is 12216106261. The next prime is 12216106319. The reversal of 12216106272 is 27260161221.

It is a tau number, because it is divible by the number of its divisors (48).

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, 55218 + ... + 165774.

It is an arithmetic number, because the mean of its divisors is an integer number (668654784).

Almost surely, 2^12216106272 is an apocalyptic number.

12216106272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12216106272 is an abundant number, since it is smaller than the sum of its proper divisors (19879323360).

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

12216106272 is a wasteful number, since it uses less digits than its factorization.

12216106272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111721 (or 111713 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

Adding to 12216106272 its reverse (27260161221), we get a palindrome (39476267493).

The spelling of 12216106272 in words is "twelve billion, two hundred sixteen million, one hundred six thousand, two hundred seventy-two".