11421211344 has 40 divisors (see below), whose sum is σ = 29524901952. Its totient is φ = 3804476160.

The previous prime is 11421211343. The next prime is 11421211357. The reversal of 11421211344 is 44311212411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421211343) 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, 9244 + ... + 151419.

Almost surely, 2^11421211344 is an apocalyptic number.

It is an amenable number.

11421211344 is an abundant number, since it is smaller than the sum of its proper divisors (18103690608).

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

11421211344 is a wasteful number, since it uses less digits than its factorization.

11421211344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162155 (or 162149 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

Adding to 11421211344 its reverse (44311212411), we get a palindrome (55732423755).

The spelling of 11421211344 in words is "eleven billion, four hundred twenty-one million, two hundred eleven thousand, three hundred forty-four".