11021222120 has 16 divisors (see below), whose sum is σ = 24797749860. Its totient is φ = 4408488832.

The previous prime is 11021222101. The next prime is 11021222123. The reversal of 11021222120 is 2122212011.

It can be written as a sum of positive squares in 2 ways, for example, as 10987651684 + 33570436 = 104822^2 + 5794^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11021222095 and 11021222104.

It is not an unprimeable number, because it can be changed into a prime (11021222123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137765237 + ... + 137765316.

Almost surely, 2^11021222120 is an apocalyptic number.

11021222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11021222120 is an abundant number, since it is smaller than the sum of its proper divisors (13776527740).

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

11021222120 is a wasteful number, since it uses less digits than its factorization.

11021222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275530564 (or 275530560 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11021222120 its reverse (2122212011), we get a palindrome (13143434131).

The spelling of 11021222120 in words is "eleven billion, twenty-one million, two hundred twenty-two thousand, one hundred twenty".