11221100221100 has 72 divisors (see below), whose sum is σ = 30358176619008. Its totient is φ = 3497485780800.

The previous prime is 11221100221091. The next prime is 11221100221151. The reversal of 11221100221100 is 112200112211.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 728635172 + ... + 728650571.

Almost surely, 2^{11221100221100} is an apocalyptic number.

11221100221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221100221100 is an abundant number, since it is smaller than the sum of its proper divisors (19137076397908).

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

11221100221100 is a wasteful number, since it uses less digits than its factorization.

11221100221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457285775 (or 1457285768 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11221100221100 its reverse (112200112211), we get a palindrome (11333300333311).

The spelling of 11221100221100 in words is "eleven trillion, two hundred twenty-one billion, one hundred million, two hundred twenty-one thousand, one hundred".