21202112210200 has 24 divisors (see below), whose sum is σ = 49294910889180. Its totient is φ = 8480844884000.

The previous prime is 21202112210137. The next prime is 21202112210231. The reversal of 21202112210200 is 201221120212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53005280326 + ... + 53005280725.

Almost surely, 2^{21202112210200} is an apocalyptic number.

21202112210200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202112210200 is an abundant number, since it is smaller than the sum of its proper divisors (28092798678980).

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

21202112210200 is a wasteful number, since it uses less digits than its factorization.

21202112210200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106010561067 (or 106010561058 counting only the distinct ones).

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

Adding to 21202112210200 its reverse (201221120212), we get a palindrome (21403333330412).

The spelling of 21202112210200 in words is "twenty-one trillion, two hundred two billion, one hundred twelve million, two hundred ten thousand, two hundred".