12212685 has 12 divisors (see below), whose sum is σ = 21168732. Its totient is φ = 6513408.

The previous prime is 12212677. The next prime is 12212699. The reversal of 12212685 is 58621221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2812329 + 9400356 = 1677^2 + 3066^2 .

It is not a de Polignac number, because 12212685 - 2³ = 12212677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135652 + ... + 135741.

It is an arithmetic number, because the mean of its divisors is an integer number (1764061).

Almost surely, 2^12212685 is an apocalyptic number.

12212685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12212685 is a deficient number, since it is larger than the sum of its proper divisors (8956047).

12212685 is a wasteful number, since it uses less digits than its factorization.

12212685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271404 (or 271401 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 12212685 is about 3494.6652200175. The cubic root of 12212685 is about 230.2875106440.

The spelling of 12212685 in words is "twelve million, two hundred twelve thousand, six hundred eighty-five".