11221000000002 has 96 divisors (see below), whose sum is σ = 26774856763200. Its totient is φ = 3375134303616.

The previous prime is 11220999999947. The next prime is 11221000000009. The reversal of 11221000000002 is 20000000012211.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (11221000000009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 200988 + ... + 4741560.

It is an arithmetic number, because the mean of its divisors is an integer number (278904757950).

Almost surely, 2^{11221000000002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11221000000002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13387428381600).

11221000000002 is an abundant number, since it is smaller than the sum of its proper divisors (15553856763198).

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

11221000000002 is a wasteful number, since it uses less digits than its factorization.

11221000000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4540832 (or 4540829 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 11221000000002 its reverse (20000000012211), we get a palindrome (31221000012213).

The spelling of 11221000000002 in words is "eleven trillion, two hundred twenty-one billion, two", and thus it is an aban number.