11221210 has 128 divisors (see below), whose sum is σ = 29030400.
Its totient is φ = 3006720.
The previous prime is 11221193. The next prime is 11221211. The reversal of 11221210 is 1212211.
Adding to 11221210 its reverse (1212211), we get a palindrome (12433421).
It can be divided in two parts, 1122 and 1210, that added together give a palindrome (2332).
11221210 = 10052 + 10062 + ... + 10152.
It is a Harshad number since it is a multiple of its sum of digits (10).
It is not an unprimeable number, because it can be changed into a prime (11221211) 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 63 ways as a sum of consecutive naturals, for example, 190161 + ... + 190219.
It is an arithmetic number, because the mean of its divisors is an integer number (226800).
Almost surely, 211221210 is an apocalyptic number.
11221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
11221210 is an abundant number, since it is smaller than the sum of its proper divisors (17809190).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11221210 is a wasteful number, since it uses less digits than its factorization.
11221210 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 116.
The product of its (nonzero) digits is 8, while the sum is 10.
The square root of 11221210 is about 3349.8074571533.
The cubic root of 11221210 is about 223.8789338346.
The spelling of 11221210 in words is "eleven million, two hundred twenty-one thousand, two hundred ten".