11200321220 has 24 divisors (see below), whose sum is σ = 25658918208. Its totient is φ = 4072844000.

The previous prime is 11200321211. The next prime is 11200321243. The reversal of 11200321220 is 2212300211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11200321195 and 11200321204.

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, 25455056 + ... + 25455495.

It is an arithmetic number, because the mean of its divisors is an integer number (1069121592).

Almost surely, 2^11200321220 is an apocalyptic number.

11200321220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11200321220 is an abundant number, since it is smaller than the sum of its proper divisors (14458596988).

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

11200321220 is a wasteful number, since it uses less digits than its factorization.

11200321220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50910571 (or 50910569 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 11200321220 its reverse (2212300211), we get a palindrome (13412621431).

The spelling of 11200321220 in words is "eleven billion, two hundred million, three hundred twenty-one thousand, two hundred twenty".