12212859 has 4 divisors (see below), whose sum is σ = 16283816. Its totient is φ = 8141904.

The previous prime is 12212833. The next prime is 12212861. The reversal of 12212859 is 95821221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95821221 = 3 ⋅31940407.

It is not a de Polignac number, because 12212859 - 2¹⁶ = 12147323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12212899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2035474 + ... + 2035479.

It is an arithmetic number, because the mean of its divisors is an integer number (4070954).

Almost surely, 2^12212859 is an apocalyptic number.

12212859 is a deficient number, since it is larger than the sum of its proper divisors (4070957).

12212859 is an equidigital number, since it uses as much as digits as its factorization.

12212859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070956.

The product of its digits is 2880, while the sum is 30.

The square root of 12212859 is about 3494.6901150174. The cubic root of 12212859 is about 230.2886043111.

The spelling of 12212859 in words is "twelve million, two hundred twelve thousand, eight hundred fifty-nine".