2021131200 has 336 divisors, whose sum is σ = 7324709760. Its totient is φ = 483840000.

The previous prime is 2021131159. The next prime is 2021131247. The reversal of 2021131200 is 21311202.

It is a super-2 number, since 2×2021131200² = 8169942655226880000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5332611 + ... + 5332989.

Almost surely, 2^2021131200 is an apocalyptic number.

2021131200 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 2021131200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3662354880).

2021131200 is an abundant number, since it is smaller than the sum of its proper divisors (5303578560).

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

2021131200 is a wasteful number, since it uses less digits than its factorization.

2021131200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2021131200 is about 44956.9927819911. The cubic root of 2021131200 is about 1264.3427874446.

Adding to 2021131200 its reverse (21311202), we get a palindrome (2042442402).

The spelling of 2021131200 in words is "two billion, twenty-one million, one hundred thirty-one thousand, two hundred".