11111322222 has 288 divisors, whose sum is σ = 33804467424. Its totient is φ = 2590963200.

The previous prime is 11111322199. The next prime is 11111322251. The reversal of 11111322222 is 22222311111.

11111322222 is a `hidden beast` number, since 11 + 111 + 322 + 222 = 666.

It is a super-2 number, since 2×11111322222² (a number of 21 digits) contains 22 as substring.

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

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 = 11111322195 and 11111322204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4665472 + ... + 4667852.

It is an arithmetic number, because the mean of its divisors is an integer number (117376623).

Almost surely, 2^11111322222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11111322222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16902233712).

11111322222 is an abundant number, since it is smaller than the sum of its proper divisors (22693145202).

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

11111322222 is a wasteful number, since it uses less digits than its factorization.

11111322222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464 (or 2454 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 11111322222 its reverse (22222311111), we get a palindrome (33333633333).

It can be divided in two parts, 11111 and 322222, that added together give a palindrome (333333).

The spelling of 11111322222 in words is "eleven billion, one hundred eleven million, three hundred twenty-two thousand, two hundred twenty-two".