12212416 has 28 divisors (see below), whose sum is σ = 24396192. Its totient is φ = 6065408.

The previous prime is 12212413. The next prime is 12212423. The reversal of 12212416 is 61421221.

It is a junction number, because it is equal to n+sod(n) for n = 12212393 and 12212402.

It is not an unprimeable number, because it can be changed into a prime (12212413) 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, 10521 + ... + 11623.

Almost surely, 2^12212416 is an apocalyptic number.

12212416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12212416 is a deficient number, since it is larger than the sum of its proper divisors (12183776).

12212416 is a wasteful number, since it uses less digits than its factorization.

12212416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288 (or 1278 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 12212416 is about 3494.6267325710. The cubic root of 12212416 is about 230.2858198393.

Adding to 12212416 its reverse (61421221), we get a palindrome (73633637).

The spelling of 12212416 in words is "twelve million, two hundred twelve thousand, four hundred sixteen".