10453451221 has 4 divisors (see below), whose sum is σ = 10453866444. Its totient is φ = 10453036000.

The previous prime is 10453451213. The next prime is 10453451227. The reversal of 10453451221 is 12215435401.

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 5157250596 + 5296200625 = 71814^2 + 72775^2 .

It is a cyclic number.

It is not a de Polignac number, because 10453451221 - 2³ = 10453451213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10453451221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10453451227) 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, 167230 + ... + 221071.

It is an arithmetic number, because the mean of its divisors is an integer number (2613466611).

Almost surely, 2^10453451221 is an apocalyptic number.

It is an amenable number.

10453451221 is a deficient number, since it is larger than the sum of its proper divisors (415223).

10453451221 is an equidigital number, since it uses as much as digits as its factorization.

10453451221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415222.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 10453451221 its reverse (12215435401), we get a palindrome (22668886622).

The spelling of 10453451221 in words is "ten billion, four hundred fifty-three million, four hundred fifty-one thousand, two hundred twenty-one".