12212630 has 48 divisors (see below), whose sum is σ = 24688800. Its totient is φ = 4333824.

The previous prime is 12212623. The next prime is 12212657. The reversal of 12212630 is 3621221.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 12212599 and 12212608.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 61271 + ... + 61469.

It is an arithmetic number, because the mean of its divisors is an integer number (514350).

Almost surely, 2^12212630 is an apocalyptic number.

12212630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12212630 is an abundant number, since it is smaller than the sum of its proper divisors (12476170).

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

12212630 is a wasteful number, since it uses less digits than its factorization.

12212630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 12212630 is about 3494.6573508715. The cubic root of 12212630 is about 230.2871649424.

Adding to 12212630 its reverse (3621221), we get a palindrome (15833851).

The spelling of 12212630 in words is "twelve million, two hundred twelve thousand, six hundred thirty".