21222210210112 has 28 divisors (see below), whose sum is σ = 43943815709856. Its totient is φ = 10149752708480.

The previous prime is 21222210210029. The next prime is 21222210210139. The reversal of 21222210210112 is 21101201222212.

It is a self number, because there is not a number n which added to its sum of digits gives 21222210210112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7208629714 + ... + 7208632657.

Almost surely, 2^{21222210210112} is an apocalyptic number.

It is an amenable number.

21222210210112 is an abundant number, since it is smaller than the sum of its proper divisors (22721605499744).

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

21222210210112 is a wasteful number, since it uses less digits than its factorization.

21222210210112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14417262406 (or 14417262396 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21222210210112 its reverse (21101201222212), we get a palindrome (42323411432324).

The spelling of 21222210210112 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred ten million, two hundred ten thousand, one hundred twelve".