11111232222222 has 128 divisors (see below), whose sum is σ = 25170576076800. Its totient is φ = 3240519744000.

The previous prime is 11111232222173. The next prime is 11111232222269. The reversal of 11111232222222 is 22222223211111.

It is a super-2 number, since 2×11111232222222² (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 11111232222192 and 11111232222201.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 364897654 + ... + 364928102.

It is an arithmetic number, because the mean of its divisors is an integer number (196645125600).

Almost surely, 2^{11111232222222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11111232222222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12585288038400).

11111232222222 is an abundant number, since it is smaller than the sum of its proper divisors (14059343854578).

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

11111232222222 is a wasteful number, since it uses less digits than its factorization.

11111232222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32390.

The product of its digits is 768, while the sum is 24.

Adding to 11111232222222 its reverse (22222223211111), we get a palindrome (33333455433333).

The spelling of 11111232222222 in words is "eleven trillion, one hundred eleven billion, two hundred thirty-two million, two hundred twenty-two thousand, two hundred twenty-two".