255441211024421 has 2 divisors, whose sum is σ = 255441211024422. Its totient is φ = 255441211024420.

The previous prime is 255441211024381. The next prime is 255441211024469. The reversal of 255441211024421 is 124420112144552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226379257269025 + 29061953755396 = 15045905^2 + 5390914^2 .

It is a cyclic number.

It is not a de Polignac number, because 255441211024421 - 2¹⁴ = 255441211008037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255441211020421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127720605512210 + 127720605512211.

It is an arithmetic number, because the mean of its divisors is an integer number (127720605512211).

Almost surely, 2^{255441211024421} is an apocalyptic number.

It is an amenable number.

255441211024421 is a deficient number, since it is larger than the sum of its proper divisors (1).

255441211024421 is an equidigital number, since it uses as much as digits as its factorization.

255441211024421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102400, while the sum is 38.

Adding to 255441211024421 its reverse (124420112144552), we get a palindrome (379861323168973).

The spelling of 255441211024421 in words is "two hundred fifty-five trillion, four hundred forty-one billion, two hundred eleven million, twenty-four thousand, four hundred twenty-one".