11000020020 has 96 divisors (see below), whose sum is σ = 35060981760. Its totient is φ = 2550725760.

The previous prime is 11000019977. The next prime is 11000020021. The reversal of 11000020020 is 2002000011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

11000020020 is a modest number, since divided by 20020 gives 11000 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 11000019990 and 11000020008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000020021) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 347140 + ... + 377499.

It is an arithmetic number, because the mean of its divisors is an integer number (365218560).

Almost surely, 2^11000020020 is an apocalyptic number.

11000020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11000020020 is an abundant number, since it is smaller than the sum of its proper divisors (24060961740).

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

11000020020 is a wasteful number, since it uses less digits than its factorization.

11000020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724685 (or 724683 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 11000020020 its reverse (2002000011), we get a palindrome (13002020031).

The spelling of 11000020020 in words is "eleven billion, twenty thousand, twenty".