11000020200021 has 48 divisors (see below), whose sum is σ = 17274521272320. Its totient is φ = 6724789426080.

The previous prime is 11000020200017. The next prime is 11000020200023. The reversal of 11000020200021 is 12000202000011.

It is not a de Polignac number, because 11000020200021 - 2² = 11000020200017 is a prime.

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 = 11000020199976 and 11000020200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000020200023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7323661 + ... + 8696898.

It is an arithmetic number, because the mean of its divisors is an integer number (359885859840).

Almost surely, 2^{11000020200021} is an apocalyptic number.

It is an amenable number.

11000020200021 is a deficient number, since it is larger than the sum of its proper divisors (6274501072299).

11000020200021 is a wasteful number, since it uses less digits than its factorization.

11000020200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16020726 (or 16020723 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 11000020200021 its reverse (12000202000011), we get a palindrome (23000222200032).

The spelling of 11000020200021 in words is "eleven trillion, twenty million, two hundred thousand, twenty-one".