2102212221100 has 18 divisors (see below), whose sum is σ = 4561800520004. Its totient is φ = 840884888400.

The previous prime is 2102212221091. The next prime is 2102212221113. The reversal of 2102212221100 is 11222122012.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10511061006 + ... + 10511061205.

Almost surely, 2^{2102212221100} is an apocalyptic number.

2102212221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102212221100 is an abundant number, since it is smaller than the sum of its proper divisors (2459588298904).

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

2102212221100 is a wasteful number, since it uses less digits than its factorization.

2102212221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21022122225 (or 21022122218 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2102212221100 its reverse (11222122012), we get a palindrome (2113434343112).

The spelling of 2102212221100 in words is "two trillion, one hundred two billion, two hundred twelve million, two hundred twenty-one thousand, one hundred".