1356612266123 has 2 divisors, whose sum is σ = 1356612266124. Its totient is φ = 1356612266122.

The previous prime is 1356612266111. The next prime is 1356612266147. The reversal of 1356612266123 is 3216622166531.

It is a weak prime.

It is an emirp because it is prime and its reverse (3216622166531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1356612266123 - 2¹⁸ = 1356612003979 is a prime.

It is a super-2 number, since 2×1356612266123² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1356612566123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678306133061 + 678306133062.

It is an arithmetic number, because the mean of its divisors is an integer number (678306133062).

Almost surely, 2^{1356612266123} is an apocalyptic number.

1356612266123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356612266123 is an equidigital number, since it uses as much as digits as its factorization.

1356612266123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 44.

The spelling of 1356612266123 in words is "one trillion, three hundred fifty-six billion, six hundred twelve million, two hundred sixty-six thousand, one hundred twenty-three".