21102001100210 has 64 divisors (see below), whose sum is σ = 39243926227968. Its totient is φ = 8161218720000.

The previous prime is 21102001100209. The next prime is 21102001100249. The reversal of 21102001100210 is 1200110020112.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21102001100191 and 21102001100200.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2360134340 + ... + 2360143280.

It is an arithmetic number, because the mean of its divisors is an integer number (613186347312).

Almost surely, 2^{21102001100210} is an apocalyptic number.

21102001100210 is a deficient number, since it is larger than the sum of its proper divisors (18141925127758).

21102001100210 is a wasteful number, since it uses less digits than its factorization.

21102001100210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14931.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21102001100210 its reverse (1200110020112), we get a palindrome (22302111120322).

The spelling of 21102001100210 in words is "twenty-one trillion, one hundred two billion, one million, one hundred thousand, two hundred ten".