11222222000000 has 224 divisors, whose sum is σ = 30486174615720. Its totient is φ = 4080800000000.

The previous prime is 11222221999969. The next prime is 11222222000029. The reversal of 11222222000000 is 22222211.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 21744950 + ... + 22255050.

Almost surely, 2^{11222222000000} is an apocalyptic number.

11222222000000 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 11222222000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15243087307860).

11222222000000 is an abundant number, since it is smaller than the sum of its proper divisors (19263952615720).

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

11222222000000 is an frugal number, since it uses more digits than its factorization.

11222222000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510156 (or 510119 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 11222222000000 its reverse (22222211), we get a palindrome (11222244222211).

The spelling of 11222222000000 in words is "eleven trillion, two hundred twenty-two billion, two hundred twenty-two million", and thus it is an aban number.