2021041020 has 96 divisors (see below), whose sum is σ = 6054612480. Its totient is φ = 502191360.

The previous prime is 2021041013. The next prime is 2021041051. The reversal of 2021041020 is 201401202.

It is a super-3 number, since 3×2021041020³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2021040987 and 2021041005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55009 + ... + 84071.

It is an arithmetic number, because the mean of its divisors is an integer number (63068880).

Almost surely, 2^2021041020 is an apocalyptic number.

2021041020 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 2021041020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3027306240).

2021041020 is an abundant number, since it is smaller than the sum of its proper divisors (4033571460).

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

2021041020 is a wasteful number, since it uses less digits than its factorization.

2021041020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29155 (or 29153 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2021041020 is about 44955.9898122597. The cubic root of 2021041020 is about 1264.3239827726.

Adding to 2021041020 its reverse (201401202), we get a palindrome (2222442222).

The spelling of 2021041020 in words is "two billion, twenty-one million, forty-one thousand, twenty".