21202123202200 has 48 divisors (see below), whose sum is σ = 50103050186160. Its totient is φ = 8341818960000.

The previous prime is 21202123202171. The next prime is 21202123202201. The reversal of 21202123202200 is 220232120212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202123202201) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 868927276 + ... + 868951675.

It is an arithmetic number, because the mean of its divisors is an integer number (1043813545545).

Almost surely, 2^{21202123202200} is an apocalyptic number.

21202123202200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202123202200 is an abundant number, since it is smaller than the sum of its proper divisors (28900926983960).

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

21202123202200 is a wasteful number, since it uses less digits than its factorization.

21202123202200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737879028 (or 1737879019 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21202123202200 its reverse (220232120212), we get a palindrome (21422355322412).

The spelling of 21202123202200 in words is "twenty-one trillion, two hundred two billion, one hundred twenty-three million, two hundred two thousand, two hundred".