12653450221 has 8 divisors (see below), whose sum is σ = 12748135680. Its totient is φ = 12558990288.

The previous prime is 12653450209. The next prime is 12653450261. The reversal of 12653450221 is 12205435621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12653450221 - 2⁷ = 12653450093 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 (12653450261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57100 + ... + 169018.

It is an arithmetic number, because the mean of its divisors is an integer number (1593516960).

Almost surely, 2^12653450221 is an apocalyptic number.

It is an amenable number.

12653450221 is a deficient number, since it is larger than the sum of its proper divisors (94685459).

12653450221 is a wasteful number, since it uses less digits than its factorization.

12653450221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112763.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 12653450221 its reverse (12205435621), we get a palindrome (24858885842).

The spelling of 12653450221 in words is "twelve billion, six hundred fifty-three million, four hundred fifty thousand, two hundred twenty-one".