21010220332200 has 240 divisors, whose sum is σ = 79605391044960. Its totient is φ = 5093386704000.

The previous prime is 21010220332193. The next prime is 21010220332217. The reversal of 21010220332200 is 223302201012.

21010220332200 is a `hidden beast` number, since 2 + 10 + 102 + 20 + 332 + 200 = 666.

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

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, 58773036 + ... + 59129435.

It is an arithmetic number, because the mean of its divisors is an integer number (331689129354).

Almost surely, 2^{21010220332200} is an apocalyptic number.

21010220332200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21010220332200 is an abundant number, since it is smaller than the sum of its proper divisors (58595170712760).

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

21010220332200 is a wasteful number, since it uses less digits than its factorization.

21010220332200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117902510 (or 117902492 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21010220332200 its reverse (223302201012), we get a palindrome (21233522533212).

The spelling of 21010220332200 in words is "twenty-one trillion, ten billion, two hundred twenty million, three hundred thirty-two thousand, two hundred".