11021221204 has 24 divisors (see below), whose sum is σ = 22047701760. Its totient is φ = 4722253536.

The previous prime is 11021221201. The next prime is 11021221207. The reversal of 11021221204 is 40212212011.

11021221204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11021221201) and next prime (11021221207).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021221201) 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 7 ways as a sum of consecutive naturals, for example, 78357 + ... + 167875.

It is an arithmetic number, because the mean of its divisors is an integer number (918654240).

Almost surely, 2^11021221204 is an apocalyptic number.

11021221204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11021221204 is an abundant number, since it is smaller than the sum of its proper divisors (11026480556).

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

11021221204 is a wasteful number, since it uses less digits than its factorization.

11021221204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93927 (or 93925 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11021221204 its reverse (40212212011), we get a palindrome (51233433215).

The spelling of 11021221204 in words is "eleven billion, twenty-one million, two hundred twenty-one thousand, two hundred four".