22111222210 has 256 divisors, whose sum is σ = 54316044288. Its totient is φ = 6270566400.

The previous prime is 22111222187. The next prime is 22111222213. The reversal of 22111222210 is 1222211122.

It is a happy number.

It is a super-2 number, since 2×22111222210² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22111222213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 91747690 + ... + 91747930.

It is an arithmetic number, because the mean of its divisors is an integer number (212172048).

Almost surely, 2^22111222210 is an apocalyptic number.

22111222210 is an abundant number, since it is smaller than the sum of its proper divisors (32204822078).

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

22111222210 is a wasteful number, since it uses less digits than its factorization.

22111222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22111222210 its reverse (1222211122), we get a palindrome (23333433332).

The spelling of 22111222210 in words is "twenty-two billion, one hundred eleven million, two hundred twenty-two thousand, two hundred ten".