12312201 has 16 divisors (see below), whose sum is σ = 17968320. Its totient is φ = 7437120.

The previous prime is 12312197. The next prime is 12312217. The reversal of 12312201 is 10221321.

It is not a de Polignac number, because 12312201 - 2² = 12312197 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12312221) 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, 16431 + ... + 17163.

It is an arithmetic number, because the mean of its divisors is an integer number (1123020).

Almost surely, 2^12312201 is an apocalyptic number.

12312201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12312201 is a deficient number, since it is larger than the sum of its proper divisors (5656119).

12312201 is a wasteful number, since it uses less digits than its factorization.

12312201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256.

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

The square root of 12312201 is about 3508.8746059100. The cubic root of 12312201 is about 230.9113244467.

Adding to 12312201 its reverse (10221321), we get a palindrome (22533522).

It can be divided in two parts, 12 and 312201, that added together give a palindrome (312213).

The spelling of 12312201 in words is "twelve million, three hundred twelve thousand, two hundred one".