11220210 has 24 divisors (see below), whose sum is σ = 29172780. Its totient is φ = 2992032.

The previous prime is 11220199. The next prime is 11220211. The reversal of 11220210 is 1202211.

It can be written as a sum of positive squares in 2 ways, for example, as 11148921 + 71289 = 3339^2 + 267^2 .

It is a super-2 number, since 2×11220210² = 251786224888200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11220192 and 11220201.

It is not an unprimeable number, because it can be changed into a prime (11220211) 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 11 ways as a sum of consecutive naturals, for example, 62245 + ... + 62424.

Almost surely, 2^11220210 is an apocalyptic number.

11220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11220210 is an abundant number, since it is smaller than the sum of its proper divisors (17952570).

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

11220210 is a wasteful number, since it uses less digits than its factorization.

11220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124682 (or 124679 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 11220210 is about 3349.6581915175. The cubic root of 11220210 is about 223.8722831679.

Adding to 11220210 its reverse (1202211), we get a palindrome (12422421).

The spelling of 11220210 in words is "eleven million, two hundred twenty thousand, two hundred ten".