12212872 has 16 divisors (see below), whose sum is σ = 26170560. Its totient is φ = 5234064.

The previous prime is 12212867. The next prime is 12212881. The reversal of 12212872 is 27821221.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108988 + ... + 109099.

It is an arithmetic number, because the mean of its divisors is an integer number (1635660).

Almost surely, 2^12212872 is an apocalyptic number.

It is an amenable number.

12212872 is an abundant number, since it is smaller than the sum of its proper divisors (13957688).

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

12212872 is a wasteful number, since it uses less digits than its factorization.

12212872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218100 (or 218096 counting only the distinct ones).

The product of its digits is 896, while the sum is 25.

The square root of 12212872 is about 3494.6919749815. The cubic root of 12212872 is about 230.2886860214.

The spelling of 12212872 in words is "twelve million, two hundred twelve thousand, eight hundred seventy-two".