11321224400 has 60 divisors (see below), whose sum is σ = 27463411872. Its totient is φ = 4484507520.

The previous prime is 11321224399. The next prime is 11321224417. The reversal of 11321224400 is 442212311.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96194 + ... + 178593.

Almost surely, 2^11321224400 is an apocalyptic number.

11321224400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11321224400 is an abundant number, since it is smaller than the sum of its proper divisors (16142187472).

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

11321224400 is a wasteful number, since it uses less digits than its factorization.

11321224400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274908 (or 274897 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 11321224400 its reverse (442212311), we get a palindrome (11763436711).

The spelling of 11321224400 in words is "eleven billion, three hundred twenty-one million, two hundred twenty-four thousand, four hundred".