11121202220 has 24 divisors (see below), whose sum is σ = 23443336224. Its totient is φ = 4431564416.

The previous prime is 11121202217. The next prime is 11121202249. The reversal of 11121202220 is 2220212111.

It is a super-2 number, since 2×11121202220² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11121202195 and 11121202204.

It is an unprimeable number.

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, 1051889 + ... + 1062408.

It is an arithmetic number, because the mean of its divisors is an integer number (976805676).

Almost surely, 2^11121202220 is an apocalyptic number.

11121202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121202220 is an abundant number, since it is smaller than the sum of its proper divisors (12322134004).

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

11121202220 is a wasteful number, since it uses less digits than its factorization.

11121202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114569 (or 2114567 counting only the distinct ones).

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

Adding to 11121202220 its reverse (2220212111), we get a palindrome (13341414331).

The spelling of 11121202220 in words is "eleven billion, one hundred twenty-one million, two hundred two thousand, two hundred twenty".