2021113332 has 144 divisors (see below), whose sum is σ = 5961260032. Its totient is φ = 565470720.

The previous prime is 2021113291. The next prime is 2021113333. The reversal of 2021113332 is 2333111202.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021113333) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3329373 + ... + 3329979.

Almost surely, 2^2021113332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021113332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2980630016).

2021113332 is an abundant number, since it is smaller than the sum of its proper divisors (3940146700).

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

2021113332 is a wasteful number, since it uses less digits than its factorization.

2021113332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878 (or 873 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2021113332 is about 44956.7940582956. The cubic root of 2021113332 is about 1264.3390615867.

Adding to 2021113332 its reverse (2333111202), we get a palindrome (4354224534).

The spelling of 2021113332 in words is "two billion, twenty-one million, one hundred thirteen thousand, three hundred thirty-two".