451212121212247 has 2 divisors, whose sum is σ = 451212121212248. Its totient is φ = 451212121212246.

The previous prime is 451212121212121. The next prime is 451212121212283. The reversal of 451212121212247 is 742212121212154.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451212121212247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451212121212947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225606060606123 + 225606060606124.

It is an arithmetic number, because the mean of its divisors is an integer number (225606060606124).

Almost surely, 2^{451212121212247} is an apocalyptic number.

451212121212247 is a deficient number, since it is larger than the sum of its proper divisors (1).

451212121212247 is an equidigital number, since it uses as much as digits as its factorization.

451212121212247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35840, while the sum is 37.

The spelling of 451212121212247 in words is "four hundred fifty-one trillion, two hundred twelve billion, one hundred twenty-one million, two hundred twelve thousand, two hundred forty-seven".