11210221220 has 24 divisors (see below), whose sum is σ = 25681598208. Its totient is φ = 4076444000.

The previous prime is 11210221207. The next prime is 11210221241. The reversal of 11210221220 is 2212201211.

It is a super-3 number, since 3×11210221220³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11210221195 and 11210221204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25477556 + ... + 25477995.

It is an arithmetic number, because the mean of its divisors is an integer number (1070066592).

Almost surely, 2^11210221220 is an apocalyptic number.

11210221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11210221220 is an abundant number, since it is smaller than the sum of its proper divisors (14471376988).

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

11210221220 is a wasteful number, since it uses less digits than its factorization.

11210221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50955571 (or 50955569 counting only the distinct ones).

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

Adding to 11210221220 its reverse (2212201211), we get a palindrome (13422422431).

The spelling of 11210221220 in words is "eleven billion, two hundred ten million, two hundred twenty-one thousand, two hundred twenty".