11011021221100 has 18 divisors (see below), whose sum is σ = 23893916050004. Its totient is φ = 4404408488400.

The previous prime is 11011021221071. The next prime is 11011021221131. The reversal of 11011021221100 is 112212011011.

It is a happy number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 55055106006 + ... + 55055106205.

Almost surely, 2^{11011021221100} is an apocalyptic number.

11011021221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011021221100 is an abundant number, since it is smaller than the sum of its proper divisors (12882894828904).

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

11011021221100 is a wasteful number, since it uses less digits than its factorization.

11011021221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110110212225 (or 110110212218 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11011021221100 its reverse (112212011011), we get a palindrome (11123233232111).

The spelling of 11011021221100 in words is "eleven trillion, eleven billion, twenty-one million, two hundred twenty-one thousand, one hundred".