21010202100112 has 10 divisors (see below), whose sum is σ = 40707266568998. Its totient is φ = 10505101050048.

The previous prime is 21010202100091. The next prime is 21010202100131. The reversal of 21010202100112 is 21100120201012.

It can be written as a sum of positive squares in only one way, i.e., 12775506112656 + 8234695987456 = 3574284^2 + 2869616^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21010202100092 and 21010202100101.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 656568815613 + ... + 656568815644.

Almost surely, 2^{21010202100112} is an apocalyptic number.

It is an amenable number.

21010202100112 is a deficient number, since it is larger than the sum of its proper divisors (19697064468886).

21010202100112 is a wasteful number, since it uses less digits than its factorization.

21010202100112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313137631265 (or 1313137631259 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21010202100112 its reverse (21100120201012), we get a palindrome (42110322301124).

The spelling of 21010202100112 in words is "twenty-one trillion, ten billion, two hundred two million, one hundred thousand, one hundred twelve".