1221823324 has 12 divisors (see below), whose sum is σ = 2195980024. Its totient is φ = 594400464.

The previous prime is 1221823321. The next prime is 1221823333. The reversal of 1221823324 is 4233281221.

It is a junction number, because it is equal to n+sod(n) for n = 1221823292 and 1221823301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221823321) 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, 4127634 + ... + 4127929.

Almost surely, 2^1221823324 is an apocalyptic number.

It is an amenable number.

1221823324 is a deficient number, since it is larger than the sum of its proper divisors (974156700).

1221823324 is a wasteful number, since it uses less digits than its factorization.

1221823324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8255604 (or 8255602 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 1221823324 is about 34954.5894554635. The cubic root of 1221823324 is about 1069.0617810020.

The spelling of 1221823324 in words is "one billion, two hundred twenty-one million, eight hundred twenty-three thousand, three hundred twenty-four".