11321224421440 has 56 divisors (see below), whose sum is σ = 26959284533952. Its totient is φ = 4528385809920.

The previous prime is 11321224421417. The next prime is 11321224421449. The reversal of 11321224421440 is 4412442212311.

It is not an unprimeable number, because it can be changed into a prime (11321224421449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14396845 + ... + 15162835.

Almost surely, 2^{11321224421440} is an apocalyptic number.

11321224421440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11321224421440 is an abundant number, since it is smaller than the sum of its proper divisors (15638060112512).

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

11321224421440 is an equidigital number, since it uses as much as digits as its factorization.

11321224421440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812195 (or 812185 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

Adding to 11321224421440 its reverse (4412442212311), we get a palindrome (15733666633751).

The spelling of 11321224421440 in words is "eleven trillion, three hundred twenty-one billion, two hundred twenty-four million, four hundred twenty-one thousand, four hundred forty".