22111111110 has 128 divisors (see below), whose sum is σ = 61039526400. Its totient is φ = 5069675520.

The previous prime is 22111111097. The next prime is 22111111123. The reversal of 22111111110 is 1111111122.

It is an interprime number because it is at equal distance from previous prime (22111111097) and next prime (22111111123).

It is a Curzon number.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 4242186 + ... + 4247394.

It is an arithmetic number, because the mean of its divisors is an integer number (476871300).

Almost surely, 2^22111111110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22111111110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30519763200).

22111111110 is an abundant number, since it is smaller than the sum of its proper divisors (38928415290).

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

22111111110 is a wasteful number, since it uses less digits than its factorization.

22111111110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5926.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 22111111110 its sum of digits (12), we get a palindrome (22111111122).

Adding to 22111111110 its reverse (1111111122), we get a palindrome (23222222232).

It can be divided in two parts, 221111 and 11110, that added together give a triangular number (232221 = T₆₈₁).

The spelling of 22111111110 in words is "twenty-two billion, one hundred eleven million, one hundred eleven thousand, one hundred ten".