1224423201213 has 24 divisors (see below), whose sum is σ = 1937221299000. Its totient is φ = 741773620224.

The previous prime is 1224423201161. The next prime is 1224423201217. The reversal of 1224423201213 is 3121023244221.

1224423201213 is a `hidden beast` number, since 1 + 2 + 2 + 4 + 423 + 20 + 1 + 213 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 249122770884 + 975300430329 = 499122^2 + 987573^2 .

It is not a de Polignac number, because 1224423201213 - 2⁹ = 1224423200701 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224423201217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137974288 + ... + 137983161.

It is an arithmetic number, because the mean of its divisors is an integer number (80717554125).

Almost surely, 2^{1224423201213} is an apocalyptic number.

It is an amenable number.

1224423201213 is a deficient number, since it is larger than the sum of its proper divisors (712798097787).

1224423201213 is a wasteful number, since it uses less digits than its factorization.

1224423201213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275957501 (or 275957498 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 1224423201213 its reverse (3121023244221), we get a palindrome (4345446445434).

It can be divided in two parts, 1224423 and 201213, that added together give a square (1425636 = 1194²).

The spelling of 1224423201213 in words is "one trillion, two hundred twenty-four billion, four hundred twenty-three million, two hundred one thousand, two hundred thirteen".