21010212210212 has 24 divisors (see below), whose sum is σ = 37627255881600. Its totient is φ = 10259623747296.

The previous prime is 21010212210193. The next prime is 21010212210227. The reversal of 21010212210212 is 21201221201012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5505287 + ... + 8504622.

It is an arithmetic number, because the mean of its divisors is an integer number (1567802328400).

Almost surely, 2^{21010212210212} is an apocalyptic number.

It is an amenable number.

21010212210212 is a deficient number, since it is larger than the sum of its proper divisors (16617043671388).

21010212210212 is a wasteful number, since it uses less digits than its factorization.

21010212210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14018675 (or 14018673 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21010212210212 its reverse (21201221201012), we get a palindrome (42211433411224).

The spelling of 21010212210212 in words is "twenty-one trillion, ten billion, two hundred twelve million, two hundred ten thousand, two hundred twelve".