11001201020 has 96 divisors (see below), whose sum is σ = 24588748800. Its totient is φ = 4122849024.

The previous prime is 11001201019. The next prime is 11001201091. The reversal of 11001201020 is 2010210011.

11001201020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11001200989 and 11001201007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16693451 + ... + 16694109.

It is an arithmetic number, because the mean of its divisors is an integer number (256132800).

Almost surely, 2^11001201020 is an apocalyptic number.

11001201020 is a gapful number since it is divisible by the number (10) 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 11001201020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12294374400).

11001201020 is an abundant number, since it is smaller than the sum of its proper divisors (13587547780).

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

11001201020 is a wasteful number, since it uses less digits than its factorization.

11001201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107 (or 1105 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 11001201020 its reverse (2010210011), we get a palindrome (13011411031).

The spelling of 11001201020 in words is "eleven billion, one million, two hundred one thousand, twenty".