22112211210 has 192 divisors, whose sum is σ = 58837363200. Its totient is φ = 5300805888.

The previous prime is 22112211157. The next prime is 22112211217. The reversal of 22112211210 is 1211221122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22112211210.

It is not an unprimeable number, because it can be changed into a prime (22112211217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 33553861 + ... + 33554519.

It is an arithmetic number, because the mean of its divisors is an integer number (306444600).

Almost surely, 2^22112211210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22112211210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29418681600).

22112211210 is an abundant number, since it is smaller than the sum of its proper divisors (36725151990).

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

22112211210 is a wasteful number, since it uses less digits than its factorization.

22112211210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805 (or 768 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22112211210 its reverse (1211221122), we get a palindrome (23323432332).

The spelling of 22112211210 in words is "twenty-two billion, one hundred twelve million, two hundred eleven thousand, two hundred ten".