2021130 has 48 divisors (see below), whose sum is σ = 5568264. Its totient is φ = 506880.

The previous prime is 2021119. The next prime is 2021137. The reversal of 2021130 is 311202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2013561 + 7569 = 1419^2 + 87^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2021137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 870 + ... + 2190.

2^2021130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2784132).

2021130 is an abundant number, since it is smaller than the sum of its proper divisors (3547134).

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

2021130 is a wasteful number, since it uses less digits than its factorization.

2021130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351 (or 1348 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2021130 is about 1421.6645173880. The cubic root of 2021130 is about 126.4342537220.

Adding to 2021130 its reverse (311202), we get a palindrome (2332332).

The spelling of 2021130 in words is "two million, twenty-one thousand, one hundred thirty".