12212634 has 32 divisors (see below), whose sum is σ = 28033920. Its totient is φ = 3474432.

The previous prime is 12212623. The next prime is 12212657. The reversal of 12212634 is 43621221.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 12212634.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12682 + ... + 13610.

It is an arithmetic number, because the mean of its divisors is an integer number (876060).

Almost surely, 2^12212634 is an apocalyptic number.

12212634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12212634 is an abundant number, since it is smaller than the sum of its proper divisors (15821286).

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

12212634 is a wasteful number, since it uses less digits than its factorization.

12212634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254.

The product of its digits is 576, while the sum is 21.

The square root of 12212634 is about 3494.6579231736. The cubic root of 12212634 is about 230.2871900844.

Adding to 12212634 its reverse (43621221), we get a palindrome (55833855).

The spelling of 12212634 in words is "twelve million, two hundred twelve thousand, six hundred thirty-four".