2021332500 has 180 divisors, whose sum is σ = 6966095136. Its totient is φ = 489960000.

The previous prime is 2021332471. The next prime is 2021332517. The reversal of 2021332500 is 52331202.

It is a tau number, because it is divible by the number of its divisors (180).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 243417 + ... + 251583.

Almost surely, 2^2021332500 is an apocalyptic number.

2021332500 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 2021332500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3483047568).

2021332500 is an abundant number, since it is smaller than the sum of its proper divisors (4944762636).

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

2021332500 is a wasteful number, since it uses less digits than its factorization.

2021332500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8208 (or 8188 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 2021332500 is about 44959.2315325785. The cubic root of 2021332500 is about 1264.3847612584.

Adding to 2021332500 its reverse (52331202), we get a palindrome (2073663702).

The spelling of 2021332500 in words is "two billion, twenty-one million, three hundred thirty-two thousand, five hundred".