1224121350424 has 96 divisors (see below), whose sum is σ = 2820079810800. Its totient is φ = 495314507520.

The previous prime is 1224121350299. The next prime is 1224121350449. The reversal of 1224121350424 is 4240531214221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1901794 + ... + 2462734.

Almost surely, 2^{1224121350424} is an apocalyptic number.

1224121350424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1224121350424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1410039905400).

1224121350424 is an abundant number, since it is smaller than the sum of its proper divisors (1595958460376).

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

1224121350424 is a wasteful number, since it uses less digits than its factorization.

1224121350424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561273 (or 561262 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 1224121350424 its reverse (4240531214221), we get a palindrome (5464652564645).

The spelling of 1224121350424 in words is "one trillion, two hundred twenty-four billion, one hundred twenty-one million, three hundred fifty thousand, four hundred twenty-four".