1221323224344 has 128 divisors (see below), whose sum is σ = 3122409327360. Its totient is φ = 398007779328.

The previous prime is 1221323224337. The next prime is 1221323224349. The reversal of 1221323224344 is 4434223231221.

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 not an unprimeable number, because it can be changed into a prime (1221323224349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95686107 + ... + 95698869.

It is an arithmetic number, because the mean of its divisors is an integer number (24393822870).

Almost surely, 2^{1221323224344} is an apocalyptic number.

It is an amenable number.

1221323224344 is an abundant number, since it is smaller than the sum of its proper divisors (1901086103016).

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

1221323224344 is a wasteful number, since it uses less digits than its factorization.

1221323224344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13321 (or 13317 counting only the distinct ones).

The product of its digits is 55296, while the sum is 33.

Adding to 1221323224344 its reverse (4434223231221), we get a palindrome (5655546455565).

The spelling of 1221323224344 in words is "one trillion, two hundred twenty-one billion, three hundred twenty-three million, two hundred twenty-four thousand, three hundred forty-four".