11002201220 has 12 divisors (see below), whose sum is σ = 23104622604. Its totient is φ = 4400880480.

The previous prime is 11002201207. The next prime is 11002201229. The reversal of 11002201220 is 2210220011.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3456499264 + 7545701956 = 58792^2 + 86866^2 .

It is not an unprimeable number, because it can be changed into a prime (11002201229) 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, 275055011 + ... + 275055050.

It is an arithmetic number, because the mean of its divisors is an integer number (1925385217).

Almost surely, 2^11002201220 is an apocalyptic number.

11002201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11002201220 is an abundant number, since it is smaller than the sum of its proper divisors (12102421384).

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

11002201220 is a wasteful number, since it uses less digits than its factorization.

11002201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550110070 (or 550110068 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 11002201220 its reverse (2210220011), we get a palindrome (13212421231).

The spelling of 11002201220 in words is "eleven billion, two million, two hundred one thousand, two hundred twenty".