12220210 has 16 divisors (see below), whose sum is σ = 22412376. Its totient is φ = 4795648.

The previous prime is 12220193. The next prime is 12220217. The reversal of 12220210 is 1202221.

It can be written as a sum of positive squares in 4 ways, for example, as 12173121 + 47089 = 3489^2 + 217^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12220217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10999 + ... + 12058.

Almost surely, 2^12220210 is an apocalyptic number.

12220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12220210 is a deficient number, since it is larger than the sum of its proper divisors (10192166).

12220210 is a wasteful number, since it uses less digits than its factorization.

12220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23117.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 12220210 is about 3495.7416952630. The cubic root of 12220210 is about 230.3347991182.

Adding to 12220210 its reverse (1202221), we get a palindrome (13422431).

The spelling of 12220210 in words is "twelve million, two hundred twenty thousand, two hundred ten".