12212870 has 16 divisors (see below), whose sum is σ = 22029840. Its totient is φ = 4874784.

The previous prime is 12212867. The next prime is 12212881. The reversal of 12212870 is 7821221.

12212870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 5204 + ... + 7176.

It is an arithmetic number, because the mean of its divisors is an integer number (1376865).

Almost surely, 2^12212870 is an apocalyptic number.

12212870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12212870 is a deficient number, since it is larger than the sum of its proper divisors (9816970).

12212870 is a wasteful number, since it uses less digits than its factorization.

12212870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 12212870 is about 3494.6916888332. The cubic root of 12212870 is about 230.2886734506.

The spelling of 12212870 in words is "twelve million, two hundred twelve thousand, eight hundred seventy".