10453782121 has 4 divisors (see below), whose sum is σ = 11003981200. Its totient is φ = 9903583044.

The previous prime is 10453782109. The next prime is 10453782139. The reversal of 10453782121 is 12128735401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12128735401 = 151 ⋅80322751.

It is a cyclic number.

It is not a de Polignac number, because 10453782121 - 2⁵ = 10453782089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10453782421) 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, 275099511 + ... + 275099548.

It is an arithmetic number, because the mean of its divisors is an integer number (2750995300).

Almost surely, 2^10453782121 is an apocalyptic number.

It is an amenable number.

10453782121 is a deficient number, since it is larger than the sum of its proper divisors (550199079).

10453782121 is an equidigital number, since it uses as much as digits as its factorization.

10453782121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550199078.

The product of its (nonzero) digits is 13440, while the sum is 34.

The spelling of 10453782121 in words is "ten billion, four hundred fifty-three million, seven hundred eighty-two thousand, one hundred twenty-one".