1221233322 has 64 divisors (see below), whose sum is σ = 2650636800. Its totient is φ = 373792320.

The previous prime is 1221233311. The next prime is 1221233329. The reversal of 1221233322 is 2233321221.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1221233329) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1766997 + ... + 1767687.

It is an arithmetic number, because the mean of its divisors is an integer number (41416200).

Almost surely, 2^1221233322 is an apocalyptic number.

1221233322 is an abundant number, since it is smaller than the sum of its proper divisors (1429403478).

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

1221233322 is a wasteful number, since it uses less digits than its factorization.

1221233322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171.

The product of its digits is 864, while the sum is 21.

The square root of 1221233322 is about 34946.1488865368. The cubic root of 1221233322 is about 1068.8896747926.

Adding to 1221233322 its reverse (2233321221), we get a palindrome (3454554543).

The spelling of 1221233322 in words is "one billion, two hundred twenty-one million, two hundred thirty-three thousand, three hundred twenty-two".