12211210 has 32 divisors (see below), whose sum is σ = 24758784. Its totient is φ = 4296000.

The previous prime is 12211193. The next prime is 12211217. The reversal of 12211210 is 1211221.

It is a super-2 number, since 2×12211210² = 298227299328200, which contains 22 as substring.

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 (12211217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1620 + ... + 5200.

It is an arithmetic number, because the mean of its divisors is an integer number (773712).

Almost surely, 2^12211210 is an apocalyptic number.

12211210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12211210 is an abundant number, since it is smaller than the sum of its proper divisors (12547574).

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

12211210 is a wasteful number, since it uses less digits than its factorization.

12211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3630.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 12211210 is about 3494.4541776936. The cubic root of 12211210 is about 230.2782391978.

Adding to 12211210 its reverse (1211221), we get a palindrome (13422431).

It can be divided in two parts, 12211 and 210, that added together give a palindrome (12421).

The spelling of 12211210 in words is "twelve million, two hundred eleven thousand, two hundred ten".