21110012012210 has 16 divisors (see below), whose sum is σ = 41452387224192. Its totient is φ = 7676368004400.

The previous prime is 21110012012189. The next prime is 21110012012263. The reversal of 21110012012210 is 1221021001112.

It is a Curzon number.

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, 95954599946 + ... + 95954600165.

It is an arithmetic number, because the mean of its divisors is an integer number (2590774201512).

Almost surely, 2^{21110012012210} is an apocalyptic number.

21110012012210 is a deficient number, since it is larger than the sum of its proper divisors (20342375211982).

21110012012210 is a wasteful number, since it uses less digits than its factorization.

21110012012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191909200129.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21110012012210 its reverse (1221021001112), we get a palindrome (22331033013322).

The spelling of 21110012012210 in words is "twenty-one trillion, one hundred ten billion, twelve million, twelve thousand, two hundred ten".