11102221021212 has 120 divisors (see below), whose sum is σ = 30315705420000. Its totient is φ = 3538437727104.

The previous prime is 11102221021181. The next prime is 11102221021223. The reversal of 11102221021212 is 21212012220111.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4768087 + ... + 6703662.

It is an arithmetic number, because the mean of its divisors is an integer number (252630878500).

Almost surely, 2^{11102221021212} is an apocalyptic number.

11102221021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11102221021212 is an abundant number, since it is smaller than the sum of its proper divisors (19213484398788).

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

11102221021212 is a wasteful number, since it uses less digits than its factorization.

11102221021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11471897 (or 11471886 counting only the distinct ones).

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

Adding to 11102221021212 its reverse (21212012220111), we get a palindrome (32314233241323).

The spelling of 11102221021212 in words is "eleven trillion, one hundred two billion, two hundred twenty-one million, twenty-one thousand, two hundred twelve".