11212111110222 has 96 divisors (see below), whose sum is σ = 27226587304800. Its totient is φ = 3304691343360.

The previous prime is 11212111110133. The next prime is 11212111110251. The reversal of 11212111110222 is 22201111121211.

It is a happy number.

11212111110222 is a `hidden beast` number, since 1 + 121 + 211 + 1 + 110 + 222 = 666.

It is a super-2 number, since 2×11212111110222² (a number of 27 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 11212111110195 and 11212111110204.

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 47 ways as a sum of consecutive naturals, for example, 22085998 + ... + 22587950.

It is an arithmetic number, because the mean of its divisors is an integer number (283610284425).

Almost surely, 2^{11212111110222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11212111110222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13613293652400).

11212111110222 is an abundant number, since it is smaller than the sum of its proper divisors (16014476194578).

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

11212111110222 is a wasteful number, since it uses less digits than its factorization.

11212111110222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505058 (or 505055 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11212111110222 its reverse (22201111121211), we get a palindrome (33413222231433).

The spelling of 11212111110222 in words is "eleven trillion, two hundred twelve billion, one hundred eleven million, one hundred ten thousand, two hundred twenty-two".