12215340331201 has 4 divisors (see below), whose sum is σ = 13960388949952. Its totient is φ = 10470291712452.

The previous prime is 12215340331127. The next prime is 12215340331261. The reversal of 12215340331201 is 10213304351221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12215340331201 - 2¹⁹ = 12215339806913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12215340331201.

It is not an unprimeable number, because it can be changed into a prime (12215340331261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 872524309365 + ... + 872524309378.

It is an arithmetic number, because the mean of its divisors is an integer number (3490097237488).

Almost surely, 2^{12215340331201} is an apocalyptic number.

It is an amenable number.

12215340331201 is a deficient number, since it is larger than the sum of its proper divisors (1745048618751).

12215340331201 is an equidigital number, since it uses as much as digits as its factorization.

12215340331201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745048618750.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 12215340331201 its reverse (10213304351221), we get a palindrome (22428644682422).

The spelling of 12215340331201 in words is "twelve trillion, two hundred fifteen billion, three hundred forty million, three hundred thirty-one thousand, two hundred one".