212021131300 has 144 divisors (see below), whose sum is σ = 517394884608. Its totient is φ = 74751030400.

The previous prime is 212021131291. The next prime is 212021131303. The reversal of 212021131300 is 3131120212.

It is not an unprimeable number, because it can be changed into a prime (212021131303) 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, 5512737 + ... + 5551063.

It is an arithmetic number, because the mean of its divisors is an integer number (3593020032).

Almost surely, 2^212021131300 is an apocalyptic number.

212021131300 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 212021131300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258697442304).

212021131300 is an abundant number, since it is smaller than the sum of its proper divisors (305373753308).

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

212021131300 is a wasteful number, since it uses less digits than its factorization.

212021131300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38506 (or 38499 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 212021131300 its reverse (3131120212), we get a palindrome (215152251512).

The spelling of 212021131300 in words is "two hundred twelve billion, twenty-one million, one hundred thirty-one thousand, three hundred".