453020301221 has 4 divisors (see below), whose sum is σ = 479668554252. Its totient is φ = 426372048192.

The previous prime is 453020301203. The next prime is 453020301241. The reversal of 453020301221 is 122103020354.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 358501562500 + 94518738721 = 598750^2 + 307439^2 .

It is a cyclic number.

It is not a de Polignac number, because 453020301221 - 2⁶ = 453020301157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (453020301241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13324126490 + ... + 13324126523.

It is an arithmetic number, because the mean of its divisors is an integer number (119917138563).

Almost surely, 2^453020301221 is an apocalyptic number.

It is an amenable number.

453020301221 is a deficient number, since it is larger than the sum of its proper divisors (26648253031).

453020301221 is a wasteful number, since it uses less digits than its factorization.

453020301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26648253030.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 453020301221 its reverse (122103020354), we get a palindrome (575123321575).

The spelling of 453020301221 in words is "four hundred fifty-three billion, twenty million, three hundred one thousand, two hundred twenty-one".