11111222202112 has 144 divisors (see below), whose sum is σ = 22765859424000. Its totient is φ = 5411133849600.

The previous prime is 11111222202107. The next prime is 11111222202161. The reversal of 11111222202112 is 21120222211111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11111222202112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403282737 + ... + 403310287.

It is an arithmetic number, because the mean of its divisors is an integer number (158096246000).

Almost surely, 2^{11111222202112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11111222202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11382929712000).

11111222202112 is an abundant number, since it is smaller than the sum of its proper divisors (11654637221888).

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

11111222202112 is a wasteful number, since it uses less digits than its factorization.

11111222202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27922 (or 27908 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11111222202112 its reverse (21120222211111), we get a palindrome (32231444413223).

The spelling of 11111222202112 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-two million, two hundred two thousand, one hundred twelve".