2221312324 has 48 divisors (see below), whose sum is σ = 4853116800. Its totient is φ = 864264960.

The previous prime is 2221312271. The next prime is 2221312349. The reversal of 2221312324 is 4232131222.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 2221312295 and 2221312304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240952 + ... + 250000.

It is an arithmetic number, because the mean of its divisors is an integer number (101106600).

Almost surely, 2^2221312324 is an apocalyptic number.

It is an amenable number.

2221312324 is an abundant number, since it is smaller than the sum of its proper divisors (2631804476).

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

2221312324 is a wasteful number, since it uses less digits than its factorization.

2221312324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9868 (or 9866 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 2221312324 is about 47130.8001629508. The cubic root of 2221312324 is about 1304.7777495199. Note that the first 4 decimals are identical.

Adding to 2221312324 its reverse (4232131222), we get a palindrome (6453443546).

The spelling of 2221312324 in words is "two billion, two hundred twenty-one million, three hundred twelve thousand, three hundred twenty-four".