2021001120 has 144 divisors (see below), whose sum is σ = 7259747040. Its totient is φ = 510561792.

The previous prime is 2021001119. The next prime is 2021001149. The reversal of 2021001120 is 211001202.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9574 + ... + 64293.

It is an arithmetic number, because the mean of its divisors is an integer number (50414910).

Almost surely, 2^2021001120 is an apocalyptic number.

2021001120 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 2021001120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3629873520).

2021001120 is an abundant number, since it is smaller than the sum of its proper divisors (5238745920).

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

2021001120 is a wasteful number, since it uses less digits than its factorization.

2021001120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73907 (or 73896 counting only the distinct ones).

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

The square root of 2021001120 is about 44955.5460427298. The cubic root of 2021001120 is about 1264.3156624963.

Adding to 2021001120 its reverse (211001202), we get a palindrome (2232002322).

The spelling of 2021001120 in words is "two billion, twenty-one million, one thousand, one hundred twenty".