451221351241 has 2 divisors, whose sum is σ = 451221351242. Its totient is φ = 451221351240.

The previous prime is 451221351223. The next prime is 451221351299. The reversal of 451221351241 is 142153122154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 436068726025 + 15152625216 = 660355^2 + 123096^2 .

It is a cyclic number.

It is not a de Polignac number, because 451221351241 - 2⁵ = 451221351209 is a prime.

It is not a weakly prime, because it can be changed into another prime (451221351541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225610675620 + 225610675621.

It is an arithmetic number, because the mean of its divisors is an integer number (225610675621).

Almost surely, 2^451221351241 is an apocalyptic number.

It is an amenable number.

451221351241 is a deficient number, since it is larger than the sum of its proper divisors (1).

451221351241 is an equidigital number, since it uses as much as digits as its factorization.

451221351241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 31.

Adding to 451221351241 its reverse (142153122154), we get a palindrome (593374473395).

The spelling of 451221351241 in words is "four hundred fifty-one billion, two hundred twenty-one million, three hundred fifty-one thousand, two hundred forty-one".