21211010220200 has 96 divisors (see below), whose sum is σ = 50431637124000. Its totient is φ = 8294004268800.

The previous prime is 21211010220193. The next prime is 21211010220217. The reversal of 21211010220200 is 202201011212.

It is a super-2 number, since 2×21211010220200² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2908871 + ... + 7133270.

It is an arithmetic number, because the mean of its divisors is an integer number (525329553375).

Almost surely, 2^{21211010220200} is an apocalyptic number.

21211010220200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21211010220200 is an abundant number, since it is smaller than the sum of its proper divisors (29220626903800).

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

21211010220200 is a wasteful number, since it uses less digits than its factorization.

21211010220200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10042395 (or 10042386 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21211010220200 its reverse (202201011212), we get a palindrome (21413211231412).

The spelling of 21211010220200 in words is "twenty-one trillion, two hundred eleven billion, ten million, two hundred twenty thousand, two hundred".