2021120000 has 120 divisors (see below), whose sum is σ = 5053148100. Its totient is φ = 807936000.

The previous prime is 2021119999. The next prime is 2021120047. The reversal of 2021120000 is 211202.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2021120000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1279211 + ... + 1280789.

Almost surely, 2^2021120000 is an apocalyptic number.

2021120000 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 2021120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2526574050).

2021120000 is an abundant number, since it is smaller than the sum of its proper divisors (3032028100).

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

2021120000 is an frugal number, since it uses more digits than its factorization.

2021120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621 (or 1586 counting only the distinct ones).

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

The square root of 2021120000 is about 44956.8682183268. The cubic root of 2021120000 is about 1264.3404520090.

Adding to 2021120000 its reverse (211202), we get a palindrome (2021331202).

The spelling of 2021120000 in words is "two billion, twenty-one million, one hundred twenty thousand".