12210352226257 has 4 divisors (see below), whose sum is σ = 12440736230580. Its totient is φ = 11979968221936.

The previous prime is 12210352226153. The next prime is 12210352226341. The reversal of 12210352226257 is 75262225301221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8133995264256 + 4076356962001 = 2852016^2 + 2018999^2 .

It is a cyclic number.

It is not a de Polignac number, because 12210352226257 - 2³⁵ = 12175992487889 is a prime.

It is a super-2 number, since 2×12210352226257² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12210352226957) 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, 115192002082 + ... + 115192002187.

It is an arithmetic number, because the mean of its divisors is an integer number (3110184057645).

Almost surely, 2^{12210352226257} is an apocalyptic number.

It is an amenable number.

12210352226257 is a deficient number, since it is larger than the sum of its proper divisors (230384004323).

12210352226257 is an equidigital number, since it uses as much as digits as its factorization.

12210352226257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230384004322.

The product of its (nonzero) digits is 201600, while the sum is 40.

Adding to 12210352226257 its reverse (75262225301221), we get a palindrome (87472577527478).

The spelling of 12210352226257 in words is "twelve trillion, two hundred ten billion, three hundred fifty-two million, two hundred twenty-six thousand, two hundred fifty-seven".