12345454321 has 4 divisors (see below), whose sum is σ = 12467686644. Its totient is φ = 12223222000.

The previous prime is 12345454313. The next prime is 12345454339.

12345454321 is nontrivially palindromic in base 10.

12345454321 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

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 10704799296 + 1640655025 = 103464^2 + 40505^2 .

It is not a de Polignac number, because 12345454321 - 2³ = 12345454313 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12345454361) 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, 61116010 + ... + 61116211.

It is an arithmetic number, because the mean of its divisors is an integer number (3116921661).

Almost surely, 2^12345454321 is an apocalyptic number.

It is an amenable number.

12345454321 is a deficient number, since it is larger than the sum of its proper divisors (122232323).

12345454321 is a wasteful number, since it uses less digits than its factorization.

12345454321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122232322.

The product of its digits is 57600, while the sum is 34.

The spelling of 12345454321 in words is "twelve billion, three hundred forty-five million, four hundred fifty-four thousand, three hundred twenty-one".