21201000210112 has 28 divisors (see below), whose sum is σ = 42070881278440. Its totient is φ = 10600463195136.

The previous prime is 21201000210107. The next prime is 21201000210121. The reversal of 21201000210112 is 21101200010212.

It is a junction number, because it is equal to n+sod(n) for n = 21201000210092 and 21201000210101.

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 3 ways as a sum of consecutive naturals, for example, 34262248 + ... + 34875544.

It is an arithmetic number, because the mean of its divisors is an integer number (1502531474230).

Almost surely, 2^{21201000210112} is an apocalyptic number.

It is an amenable number.

21201000210112 is a deficient number, since it is larger than the sum of its proper divisors (20869881068328).

21201000210112 is an equidigital number, since it uses as much as digits as its factorization.

21201000210112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153448 (or 1153438 counting only the distinct ones).

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

Adding to 21201000210112 its reverse (21101200010212), we get a palindrome (42302200220324).

The spelling of 21201000210112 in words is "twenty-one trillion, two hundred one billion, two hundred ten thousand, one hundred twelve".