11222120001222 has 96 divisors (see below), whose sum is σ = 26456918997600. Its totient is φ = 3417128409600.

The previous prime is 11222120001179. The next prime is 11222120001227. The reversal of 11222120001222 is 22210002122211.

It is a happy number.

It is a super-2 number, since 2×11222120001222² (a number of 27 digits) contains 22 as substring.

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 = 11222120001195 and 11222120001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222120001227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49494658 + ... + 49720874.

It is an arithmetic number, because the mean of its divisors is an integer number (275592906225).

Almost surely, 2^{11222120001222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11222120001222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13228459498800).

11222120001222 is an abundant number, since it is smaller than the sum of its proper divisors (15234798996378).

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

11222120001222 is a wasteful number, since it uses less digits than its factorization.

11222120001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228438 (or 228435 counting only the distinct ones).

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

Adding to 11222120001222 its reverse (22210002122211), we get a palindrome (33432122123433).

The spelling of 11222120001222 in words is "eleven trillion, two hundred twenty-two billion, one hundred twenty million, one thousand, two hundred twenty-two".