1331223232244 has 12 divisors (see below), whose sum is σ = 2334112139268. Its totient is φ = 664334049600.

The previous prime is 1331223232153. The next prime is 1331223232247. The reversal of 1331223232244 is 4422323221331.

It can be written as a sum of positive squares in 2 ways, for example, as 163570095844 + 1167653136400 = 404438^2 + 1080580^2 .

It is a super-2 number, since 2×1331223232244² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1331223232244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331223232247) 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, 319389287 + ... + 319393454.

It is an arithmetic number, because the mean of its divisors is an integer number (194509344939).

Almost surely, 2^{1331223232244} is an apocalyptic number.

It is an amenable number.

1331223232244 is a deficient number, since it is larger than the sum of its proper divisors (1002888907024).

1331223232244 is a wasteful number, since it uses less digits than its factorization.

1331223232244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638783266 (or 638783264 counting only the distinct ones).

The product of its digits is 41472, while the sum is 32.

Adding to 1331223232244 its reverse (4422323221331), we get a palindrome (5753546453575).

The spelling of 1331223232244 in words is "one trillion, three hundred thirty-one billion, two hundred twenty-three million, two hundred thirty-two thousand, two hundred forty-four".