11223021042 has 128 divisors (see below), whose sum is σ = 26925177600. Its totient is φ = 3454244352.

The previous prime is 11223021037. The next prime is 11223021071. The reversal of 11223021042 is 24012032211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9406798 + ... + 9407990.

It is an arithmetic number, because the mean of its divisors is an integer number (210352950).

Almost surely, 2^11223021042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11223021042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13462588800).

11223021042 is an abundant number, since it is smaller than the sum of its proper divisors (15702156558).

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

11223021042 is a wasteful number, since it uses less digits than its factorization.

11223021042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449 (or 1443 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 11223021042 its reverse (24012032211), we get a palindrome (35235053253).

The spelling of 11223021042 in words is "eleven billion, two hundred twenty-three million, twenty-one thousand, forty-two".