21110112222210 has 80 divisors (see below), whose sum is σ = 61922995877952. Its totient is φ = 5117602960800.

The previous prime is 21110112222191. The next prime is 21110112222263. The reversal of 21110112222210 is 1222221101112.

21110112222210 is a `hidden beast` number, since 211 + 1 + 0 + 11 + 222 + 221 + 0 = 666.

21110112222210 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1184621406 + ... + 1184639225.

Almost surely, 2^{21110112222210} is an apocalyptic number.

21110112222210 is an abundant number, since it is smaller than the sum of its proper divisors (40812883655742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110112222210 is a wasteful number, since it uses less digits than its factorization.

21110112222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369260661 (or 2369260652 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 21110112222210 its reverse (1222221101112), we get a palindrome (22332333323322).

The spelling of 21110112222210 in words is "twenty-one trillion, one hundred ten billion, one hundred twelve million, two hundred twenty-two thousand, two hundred ten".