12354363514221 has 16 divisors (see below), whose sum is σ = 16505106139200. Its totient is φ = 8219938059648.

The previous prime is 12354363514147. The next prime is 12354363514223. The reversal of 12354363514221 is 12241536345321.

It is not a de Polignac number, because 12354363514221 - 2⁷ = 12354363514093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12354363514223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6890535 + ... + 8496363.

It is an arithmetic number, because the mean of its divisors is an integer number (1031569133700).

Almost surely, 2^{12354363514221} is an apocalyptic number.

It is an amenable number.

12354363514221 is a deficient number, since it is larger than the sum of its proper divisors (4150742624979).

12354363514221 is a wasteful number, since it uses less digits than its factorization.

12354363514221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610908.

The product of its digits is 518400, while the sum is 42.

Adding to 12354363514221 its reverse (12241536345321), we get a palindrome (24595899859542).

The spelling of 12354363514221 in words is "twelve trillion, three hundred fifty-four billion, three hundred sixty-three million, five hundred fourteen thousand, two hundred twenty-one".