11102221221012 has 48 divisors (see below), whose sum is σ = 29188938441600. Its totient is φ = 3648617300160.

The previous prime is 11102221220903. The next prime is 11102221221019. The reversal of 11102221221012 is 21012212220111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102221221019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 723924337 + ... + 723939672.

It is an arithmetic number, because the mean of its divisors is an integer number (608102884200).

Almost surely, 2^{11102221221012} is an apocalyptic number.

11102221221012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11102221221012 is an abundant number, since it is smaller than the sum of its proper divisors (18086717220588).

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

11102221221012 is a wasteful number, since it uses less digits than its factorization.

11102221221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447864093 (or 1447864085 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11102221221012 its reverse (21012212220111), we get a palindrome (32114433441123).

Subtracting 11102221221012 from its reverse (21012212220111), we obtain a palindrome (9909990999099).

The spelling of 11102221221012 in words is "eleven trillion, one hundred two billion, two hundred twenty-one million, two hundred twenty-one thousand, twelve".