11121000222222 has 24 divisors (see below), whose sum is σ = 26286000525720. Its totient is φ = 3370000067280.

The previous prime is 11121000222217. The next prime is 11121000222257. The reversal of 11121000222222 is 22222200012111.

It is a happy number.

11121000222222 is a `hidden beast` number, since 1 + 11 + 210 + 0 + 0 + 222 + 222 = 666.

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 = 11121000222195 and 11121000222204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28083333697 + ... + 28083334092.

It is an arithmetic number, because the mean of its divisors is an integer number (1095250021905).

Almost surely, 2^{11121000222222} is an apocalyptic number.

11121000222222 is an abundant number, since it is smaller than the sum of its proper divisors (15165000303498).

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

11121000222222 is a wasteful number, since it uses less digits than its factorization.

11121000222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56166667808 (or 56166667805 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11121000222222 its reverse (22222200012111), we get a palindrome (33343200234333).

The spelling of 11121000222222 in words is "eleven trillion, one hundred twenty-one billion, two hundred twenty-two thousand, two hundred twenty-two".