12312210 has 32 divisors (see below), whose sum is σ = 29860992. Its totient is φ = 3248640.

The previous prime is 12312197. The next prime is 12312217. The reversal of 12312210 is 1221321.

It is not an unprimeable number, because it can be changed into a prime (12312217) 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, 795 + ... + 5025.

It is an arithmetic number, because the mean of its divisors is an integer number (933156).

Almost surely, 2^12312210 is an apocalyptic number.

12312210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12312210 is an abundant number, since it is smaller than the sum of its proper divisors (17548782).

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

12312210 is a wasteful number, since it uses less digits than its factorization.

12312210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4338.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 12312210 is about 3508.8758883722. The cubic root of 12312210 is about 230.9113807107.

Adding to 12312210 its reverse (1221321), we get a palindrome (13533531).

The spelling of 12312210 in words is "twelve million, three hundred twelve thousand, two hundred ten".