2021044011100 has 144 divisors (see below), whose sum is σ = 4549797683200. Its totient is φ = 778434624000.

The previous prime is 2021044011067. The next prime is 2021044011109. The reversal of 2021044011100 is 11104401202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021044011109) 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, 556606285 + ... + 556609915.

Almost surely, 2^{2021044011100} is an apocalyptic number.

2021044011100 is a gapful number since it is divisible by the number (20) 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 2021044011100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2274898841600).

2021044011100 is an abundant number, since it is smaller than the sum of its proper divisors (2528753672100).

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

2021044011100 is a wasteful number, since it uses less digits than its factorization.

2021044011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4524 (or 4517 counting only the distinct ones).

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

Adding to 2021044011100 its reverse (11104401202), we get a palindrome (2032148412302).

The spelling of 2021044011100 in words is "two trillion, twenty-one billion, forty-four million, eleven thousand, one hundred".