2021232120 has 32 divisors (see below), whose sum is σ = 6063696720. Its totient is φ = 538995200.

The previous prime is 2021232077. The next prime is 2021232127. The reversal of 2021232120 is 212321202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2021232120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021232127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8421681 + ... + 8421920.

Almost surely, 2^2021232120 is an apocalyptic number.

2021232120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021232120 is an abundant number, since it is smaller than the sum of its proper divisors (4042464600).

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

2021232120 is a wasteful number, since it uses less digits than its factorization.

2021232120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16843615 (or 16843611 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2021232120 is about 44958.1151740150. The cubic root of 2021232120 is about 1264.3638309986.

Adding to 2021232120 its reverse (212321202), we get a palindrome (2233553322).

The spelling of 2021232120 in words is "two billion, twenty-one million, two hundred thirty-two thousand, one hundred twenty".