11012001010020 has 48 divisors (see below), whose sum is σ = 34259558699520. Its totient is φ = 2936533602528.

The previous prime is 11012001010019. The next prime is 11012001010037. The reversal of 11012001010020 is 2001010021011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11012001009984 and 11012001010011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10196296692 + ... + 10196297771.

It is an arithmetic number, because the mean of its divisors is an integer number (713740806240).

Almost surely, 2^{11012001010020} is an apocalyptic number.

11012001010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11012001010020 is an abundant number, since it is smaller than the sum of its proper divisors (23247557689500).

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

11012001010020 is a wasteful number, since it uses less digits than its factorization.

11012001010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20392594481 (or 20392594473 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11012001010020 its reverse (2001010021011), we get a palindrome (13013011031031).

The spelling of 11012001010020 in words is "eleven trillion, twelve billion, one million, ten thousand, twenty".