2021111020000 has 120 divisors (see below), whose sum is σ = 5011394040576. Its totient is φ = 802077696000.

The previous prime is 2021111019923. The next prime is 2021111020039. The reversal of 2021111020000 is 201111202.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2142144 + ... + 2937856.

Almost surely, 2^{2021111020000} is an apocalyptic number.

2021111020000 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 2021111020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2505697020288).

2021111020000 is an abundant number, since it is smaller than the sum of its proper divisors (2990283020576).

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

2021111020000 is an equidigital number, since it uses as much as digits as its factorization.

2021111020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795870 (or 795847 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2021111020000 its reverse (201111202), we get a palindrome (2021312131202).

The spelling of 2021111020000 in words is "two trillion, twenty-one billion, one hundred eleven million, twenty thousand".