12217140523321 has 8 divisors (see below), whose sum is σ = 12393352173384. Its totient is φ = 12042123528960.

The previous prime is 12217140523303. The next prime is 12217140523333. The reversal of 12217140523321 is 12332504171221.

It can be written as a sum of positive squares in 4 ways, for example, as 884060660025 + 11333079863296 = 940245^2 + 3366464^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12217140523321 - 2²⁵ = 12217106968889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12217140523121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298643326 + ... + 298684231.

It is an arithmetic number, because the mean of its divisors is an integer number (1549169021673).

Almost surely, 2^{12217140523321} is an apocalyptic number.

It is an amenable number.

12217140523321 is a deficient number, since it is larger than the sum of its proper divisors (176211650063).

12217140523321 is a wasteful number, since it uses less digits than its factorization.

12217140523321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597327851.

The product of its (nonzero) digits is 20160, while the sum is 34.

Adding to 12217140523321 its reverse (12332504171221), we get a palindrome (24549644694542).

The spelling of 12217140523321 in words is "twelve trillion, two hundred seventeen billion, one hundred forty million, five hundred twenty-three thousand, three hundred twenty-one".