1213124440424 has 128 divisors (see below), whose sum is σ = 2645618976000. Its totient is φ = 516819308544.

The previous prime is 1213124440361. The next prime is 1213124440433. The reversal of 1213124440424 is 4240444213121.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184446224 + ... + 184452800.

It is an arithmetic number, because the mean of its divisors is an integer number (20668898250).

Almost surely, 2^{1213124440424} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213124440424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1322809488000).

1213124440424 is an abundant number, since it is smaller than the sum of its proper divisors (1432494535576).

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

1213124440424 is a wasteful number, since it uses less digits than its factorization.

1213124440424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9307 (or 9303 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 1213124440424 its reverse (4240444213121), we get a palindrome (5453568653545).

The spelling of 1213124440424 in words is "one trillion, two hundred thirteen billion, one hundred twenty-four million, four hundred forty thousand, four hundred twenty-four".