1213324223441 has 24 divisors (see below), whose sum is σ = 1343704048680. Its totient is φ = 1094713678080.

The previous prime is 1213324223437. The next prime is 1213324223471. The reversal of 1213324223441 is 1443224233121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19243515841 + 1194080707600 = 138721^2 + 1092740^2 .

It is not a de Polignac number, because 1213324223441 - 2² = 1213324223437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213324223398 and 1213324223407.

It is not an unprimeable number, because it can be changed into a prime (1213324223411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129113555 + ... + 129122951.

It is an arithmetic number, because the mean of its divisors is an integer number (55987668695).

Almost surely, 2^{1213324223441} is an apocalyptic number.

1213324223441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1213324223441 is a deficient number, since it is larger than the sum of its proper divisors (130379825239).

1213324223441 is a wasteful number, since it uses less digits than its factorization.

1213324223441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17345 (or 17334 counting only the distinct ones).

The product of its digits is 27648, while the sum is 32.

Adding to 1213324223441 its reverse (1443224233121), we get a palindrome (2656548456562).

The spelling of 1213324223441 in words is "one trillion, two hundred thirteen billion, three hundred twenty-four million, two hundred twenty-three thousand, four hundred forty-one".