11223121336 has 64 divisors (see below), whose sum is σ = 26342366400. Its totient is φ = 4370860032.

The previous prime is 11223121309. The next prime is 11223121337. The reversal of 11223121336 is 63312132211.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11223121336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223121337) 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, 175651 + ... + 230866.

It is an arithmetic number, because the mean of its divisors is an integer number (411599475).

Almost surely, 2^11223121336 is an apocalyptic number.

It is an amenable number.

11223121336 is an abundant number, since it is smaller than the sum of its proper divisors (15119245064).

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

11223121336 is a wasteful number, since it uses less digits than its factorization.

11223121336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406576 (or 406572 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

Adding to 11223121336 its reverse (63312132211), we get a palindrome (74535253547).

The spelling of 11223121336 in words is "eleven billion, two hundred twenty-three million, one hundred twenty-one thousand, three hundred thirty-six".