2021118 has 32 divisors (see below), whose sum is σ = 4465152. Its totient is φ = 604800.

The previous prime is 2021099. The next prime is 2021119. The reversal of 2021118 is 8111202.

It is a junction number, because it is equal to n+sod(n) for n = 2021097 and 2021106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7323 + ... + 7593.

It is an arithmetic number, because the mean of its divisors is an integer number (139536).

2^2021118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2232576).

2021118 is an abundant number, since it is smaller than the sum of its proper divisors (2444034).

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

2021118 is a wasteful number, since it uses less digits than its factorization.

2021118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 2021118 is about 1421.6602969767. The cubic root of 2021118 is about 126.4340034966.

The spelling of 2021118 in words is "two million, twenty-one thousand, one hundred eighteen".