12261210 has 64 divisors (see below), whose sum is σ = 32054400. Its totient is φ = 2983680.

The previous prime is 12261187. The next prime is 12261211. The reversal of 12261210 is 1216221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12261210.

It is not an unprimeable number, because it can be changed into a prime (12261211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58005 + ... + 58215.

It is an arithmetic number, because the mean of its divisors is an integer number (500850).

Almost surely, 2^12261210 is an apocalyptic number.

12261210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12261210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16027200).

12261210 is an abundant number, since it is smaller than the sum of its proper divisors (19793190).

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

12261210 is a wasteful number, since it uses less digits than its factorization.

12261210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 12261210 is about 3501.6010623713. The cubic root of 12261210 is about 230.5921101591.

Adding to 12261210 its reverse (1216221), we get a palindrome (13477431).

The spelling of 12261210 in words is "twelve million, two hundred sixty-one thousand, two hundred ten".