451221351223 has 2 divisors, whose sum is σ = 451221351224. Its totient is φ = 451221351222.

The previous prime is 451221351209. The next prime is 451221351241. The reversal of 451221351223 is 322153122154.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 451221351223 - 2²⁵ = 451187796791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451221351323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225610675611 + 225610675612.

It is an arithmetic number, because the mean of its divisors is an integer number (225610675612).

Almost surely, 2^451221351223 is an apocalyptic number.

451221351223 is a deficient number, since it is larger than the sum of its proper divisors (1).

451221351223 is an equidigital number, since it uses as much as digits as its factorization.

451221351223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 31.

Adding to 451221351223 its reverse (322153122154), we get a palindrome (773374473377).

The spelling of 451221351223 in words is "four hundred fifty-one billion, two hundred twenty-one million, three hundred fifty-one thousand, two hundred twenty-three".