21202112103300 has 162 divisors, whose sum is σ = 70596023859998. Its totient is φ = 5321314344960.

The previous prime is 21202112103287. The next prime is 21202112103301. The reversal of 21202112103300 is 330121120212.

21202112103300 is a `hidden beast` number, since 2 + 120 + 2 + 1 + 1 + 210 + 330 + 0 = 666.

It can be written as a sum of positive squares in 9 ways, for example, as 677026169856 + 20525085933444 = 822816^2 + 4530462^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21202112103301) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 40497517 + ... + 41017716.

Almost surely, 2^{21202112103300} is an apocalyptic number.

21202112103300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202112103300 is an abundant number, since it is smaller than the sum of its proper divisors (49393911756698).

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

21202112103300 is a wasteful number, since it uses less digits than its factorization.

21202112103300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81515287 (or 81515260 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21202112103300 its reverse (330121120212), we get a palindrome (21532233223512).

The spelling of 21202112103300 in words is "twenty-one trillion, two hundred two billion, one hundred twelve million, one hundred three thousand, three hundred".