12215201 has 2 divisors, whose sum is σ = 12215202. Its totient is φ = 12215200.

The previous prime is 12215191. The next prime is 12215219. The reversal of 12215201 is 10251221.

12215201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7480225 + 4734976 = 2735^2 + 2176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12215201 is a prime.

It is a super-2 number, since 2×12215201² = 298422270940802, which contains 22 as substring.

It is a plaindrome in base 15.

It is a zygodrome in base 15.

It is not a weakly prime, because it can be changed into another prime (12215221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6107600 + 6107601.

It is an arithmetic number, because the mean of its divisors is an integer number (6107601).

Almost surely, 2^12215201 is an apocalyptic number.

It is an amenable number.

12215201 is a deficient number, since it is larger than the sum of its proper divisors (1).

12215201 is an equidigital number, since it uses as much as digits as its factorization.

12215201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 12215201 is about 3495.0251787362. The cubic root of 12215201 is about 230.3033238085.

Adding to 12215201 its reverse (10251221), we get a palindrome (22466422).

The spelling of 12215201 in words is "twelve million, two hundred fifteen thousand, two hundred one".