321420021041453 has 2 divisors, whose sum is σ = 321420021041454. Its totient is φ = 321420021041452.

The previous prime is 321420021041417. The next prime is 321420021041479. The reversal of 321420021041453 is 354140120024123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295018479914404 + 26401541127049 = 17176102^2 + 5138243^2 .

It is a cyclic number.

It is not a de Polignac number, because 321420021041453 - 2⁶ = 321420021041389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321420021041153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160710010520726 + 160710010520727.

It is an arithmetic number, because the mean of its divisors is an integer number (160710010520727).

Almost surely, 2^{321420021041453} is an apocalyptic number.

It is an amenable number.

321420021041453 is a deficient number, since it is larger than the sum of its proper divisors (1).

321420021041453 is an equidigital number, since it uses as much as digits as its factorization.

321420021041453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 321420021041453 its reverse (354140120024123), we get a palindrome (675560141065576).

The spelling of 321420021041453 in words is "three hundred twenty-one trillion, four hundred twenty billion, twenty-one million, forty-one thousand, four hundred fifty-three".