12219822 has 20 divisors (see below), whose sum is σ = 27381816. Its totient is φ = 4073220.

The previous prime is 12219803. The next prime is 12219827. The reversal of 12219822 is 22891221.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12219827) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 37554 + ... + 37877.

Almost surely, 2^12219822 is an apocalyptic number.

12219822 is an abundant number, since it is smaller than the sum of its proper divisors (15161994).

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

12219822 is an equidigital number, since it uses as much as digits as its factorization.

12219822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75445 (or 75436 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 12219822 is about 3495.6861987312. The cubic root of 12219822 is about 230.3323613301.

It can be divided in two parts, 12219 and 822, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 12219822 in words is "twelve million, two hundred nineteen thousand, eight hundred twenty-two".