11401222224 has 80 divisors (see below), whose sum is σ = 33725877120. Its totient is φ = 3251189760.

The previous prime is 11401222223. The next prime is 11401222237. The reversal of 11401222224 is 42222210411.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 11401222224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11401222223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142492 + ... + 207620.

It is an arithmetic number, because the mean of its divisors is an integer number (421573464).

Almost surely, 2^11401222224 is an apocalyptic number.

11401222224 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 11401222224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16862938560).

11401222224 is an abundant number, since it is smaller than the sum of its proper divisors (22324654896).

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

11401222224 is a wasteful number, since it uses less digits than its factorization.

11401222224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65668 (or 65662 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 11401222224 its reverse (42222210411), we get a palindrome (53623432635).

The spelling of 11401222224 in words is "eleven billion, four hundred one million, two hundred twenty-two thousand, two hundred twenty-four".