11022121220 has 24 divisors (see below), whose sum is σ = 25250678208. Its totient is φ = 4008044000.

The previous prime is 11022121183. The next prime is 11022121223. The reversal of 11022121220 is 2212122011.

It is a junction number, because it is equal to n+sod(n) for n = 11022121195 and 11022121204.

It is not an unprimeable number, because it can be changed into a prime (11022121223) 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 7 ways as a sum of consecutive naturals, for example, 25050056 + ... + 25050495.

It is an arithmetic number, because the mean of its divisors is an integer number (1052111592).

Almost surely, 2^11022121220 is an apocalyptic number.

11022121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11022121220 is an abundant number, since it is smaller than the sum of its proper divisors (14228556988).

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

11022121220 is a wasteful number, since it uses less digits than its factorization.

11022121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50100571 (or 50100569 counting only the distinct ones).

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

Adding to 11022121220 its reverse (2212122011), we get a palindrome (13234243231).

The spelling of 11022121220 in words is "eleven billion, twenty-two million, one hundred twenty-one thousand, two hundred twenty".