12021123001357 has 2 divisors, whose sum is σ = 12021123001358. Its totient is φ = 12021123001356.

The previous prime is 12021123001297. The next prime is 12021123001367. The reversal of 12021123001357 is 75310032112021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11584077724521 + 437045276836 = 3403539^2 + 661094^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021123001357 - 2¹¹ = 12021122999309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021123001367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010561500678 + 6010561500679.

It is an arithmetic number, because the mean of its divisors is an integer number (6010561500679).

Almost surely, 2^{12021123001357} is an apocalyptic number.

It is an amenable number.

12021123001357 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021123001357 is an equidigital number, since it uses as much as digits as its factorization.

12021123001357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

Adding to 12021123001357 its reverse (75310032112021), we get a palindrome (87331155113378).

The spelling of 12021123001357 in words is "twelve trillion, twenty-one billion, one hundred twenty-three million, one thousand, three hundred fifty-seven".