21213133232200 has 192 divisors, whose sum is σ = 64272915020160. Its totient is φ = 6318688849920.

The previous prime is 21213133232171. The next prime is 21213133232237. The reversal of 21213133232200 is 223233131212.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33971682 + ... + 34590481.

It is an arithmetic number, because the mean of its divisors is an integer number (334754765730).

Almost surely, 2^{21213133232200} is an apocalyptic number.

21213133232200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21213133232200 is an abundant number, since it is smaller than the sum of its proper divisors (43059781787960).

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

21213133232200 is a wasteful number, since it uses less digits than its factorization.

21213133232200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68562216 (or 68562207 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21213133232200 its reverse (223233131212), we get a palindrome (21436366363412).

The spelling of 21213133232200 in words is "twenty-one trillion, two hundred thirteen billion, one hundred thirty-three million, two hundred thirty-two thousand, two hundred".