11220242544 has 120 divisors (see below), whose sum is σ = 35960496000. Its totient is φ = 3199215744.

The previous prime is 11220242519. The next prime is 11220242557. The reversal of 11220242544 is 44524202211.

It is a happy number.

11220242544 is a `hidden beast` number, since 11 + 220 + 2 + 425 + 4 + 4 = 666.

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, 491839 + ... + 514145.

It is an arithmetic number, because the mean of its divisors is an integer number (299670800).

Almost surely, 2^11220242544 is an apocalyptic number.

11220242544 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 11220242544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17980248000).

11220242544 is an abundant number, since it is smaller than the sum of its proper divisors (24740253456).

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

11220242544 is a wasteful number, since it uses less digits than its factorization.

11220242544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22827 (or 22818 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 11220242544 its reverse (44524202211), we get a palindrome (55744444755).

The spelling of 11220242544 in words is "eleven billion, two hundred twenty million, two hundred forty-two thousand, five hundred forty-four".