12103213122257 has 2 divisors, whose sum is σ = 12103213122258. Its totient is φ = 12103213122256.

The previous prime is 12103213122239. The next prime is 12103213122311. The reversal of 12103213122257 is 75222131230121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11366870647441 + 736342474816 = 3371479^2 + 858104^2 .

It is a cyclic number.

It is not a de Polignac number, because 12103213122257 - 2¹⁴ = 12103213105873 is a prime.

It is not a weakly prime, because it can be changed into another prime (12103213122227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051606561128 + 6051606561129.

It is an arithmetic number, because the mean of its divisors is an integer number (6051606561129).

Almost surely, 2^{12103213122257} is an apocalyptic number.

It is an amenable number.

12103213122257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12103213122257 is an equidigital number, since it uses as much as digits as its factorization.

12103213122257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

Adding to 12103213122257 its reverse (75222131230121), we get a palindrome (87325344352378).

The spelling of 12103213122257 in words is "twelve trillion, one hundred three billion, two hundred thirteen million, one hundred twenty-two thousand, two hundred fifty-seven".