11122211111000 has 256 divisors, whose sum is σ = 28779656555520. Its totient is φ = 3989556480000.

The previous prime is 11122211110991. The next prime is 11122211111009. The reversal of 11122211111000 is 11111222111.

It is an interprime number because it is at equal distance from previous prime (11122211110991) and next prime (11122211111009).

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122211111009) 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 63 ways as a sum of consecutive naturals, for example, 262251797 + ... + 262294203.

It is an arithmetic number, because the mean of its divisors is an integer number (112420533420).

Almost surely, 2^{11122211111000} is an apocalyptic number.

11122211111000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11122211111000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14389828277760).

11122211111000 is an abundant number, since it is smaller than the sum of its proper divisors (17657445444520).

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

11122211111000 is a wasteful number, since it uses less digits than its factorization.

11122211111000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42763 (or 42749 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11122211111000 its reverse (11111222111), we get a palindrome (11133322333111).

It can be divided in two parts, 1112221111 and 1000, that added together give a palindrome (1112222111).

The spelling of 11122211111000 in words is "eleven trillion, one hundred twenty-two billion, two hundred eleven million, one hundred eleven thousand".