11223331028 has 72 divisors (see below), whose sum is σ = 24657855264. Its totient is φ = 4430462400.

The previous prime is 11223331003. The next prime is 11223331033. The reversal of 11223331028 is 82013332211.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 11223330988 and 11223331006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1246583 + ... + 1255553.

It is an arithmetic number, because the mean of its divisors is an integer number (342470212).

Almost surely, 2^11223331028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11223331028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12328927632).

11223331028 is an abundant number, since it is smaller than the sum of its proper divisors (13434524236).

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

11223331028 is a wasteful number, since it uses less digits than its factorization.

11223331028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9493 (or 9484 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 11223331028 its reverse (82013332211), we get a palindrome (93236663239).

The spelling of 11223331028 in words is "eleven billion, two hundred twenty-three million, three hundred thirty-one thousand, twenty-eight".