11101244020 has 12 divisors (see below), whose sum is σ = 23312612484. Its totient is φ = 4440497600.

The previous prime is 11101243999. The next prime is 11101244029. The reversal of 11101244020 is 2044210111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7095366756 + 4005877264 = 84234^2 + 63292^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11101243985 and 11101244003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101244029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277531081 + ... + 277531120.

It is an arithmetic number, because the mean of its divisors is an integer number (1942717707).

Almost surely, 2^11101244020 is an apocalyptic number.

11101244020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11101244020 is an abundant number, since it is smaller than the sum of its proper divisors (12211368464).

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

11101244020 is a wasteful number, since it uses less digits than its factorization.

11101244020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555062210 (or 555062208 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11101244020 its reverse (2044210111), we get a palindrome (13145454131).

The spelling of 11101244020 in words is "eleven billion, one hundred one million, two hundred forty-four thousand, twenty".