1321233222 has 32 divisors (see below), whose sum is σ = 2777018112. Its totient is φ = 418539744.

The previous prime is 1321233203. The next prime is 1321233247. The reversal of 1321233222 is 2223321231.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59658 + ... + 78749.

It is an arithmetic number, because the mean of its divisors is an integer number (86781816).

Almost surely, 2^1321233222 is an apocalyptic number.

1321233222 is an abundant number, since it is smaller than the sum of its proper divisors (1455784890).

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

1321233222 is a wasteful number, since it uses less digits than its factorization.

1321233222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138492.

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

The square root of 1321233222 is about 36348.7719462432. The cubic root of 1321233222 is about 1097.3028195149.

Adding to 1321233222 its reverse (2223321231), we get a palindrome (3544554453).

The spelling of 1321233222 in words is "one billion, three hundred twenty-one million, two hundred thirty-three thousand, two hundred twenty-two".