13054355235221 has 4 divisors (see below), whose sum is σ = 13083429523500. Its totient is φ = 13025280946944.

The previous prime is 13054355235199. The next prime is 13054355235277. The reversal of 13054355235221 is 12253255345031.

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 3096297736900 + 9958057498321 = 1759630^2 + 3155639^2 .

It is a cyclic number.

It is not a de Polignac number, because 13054355235221 - 2³⁰ = 13053281493397 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 (13054355235521) 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, 14537143466 + ... + 14537144363.

It is an arithmetic number, because the mean of its divisors is an integer number (3270857380875).

Almost surely, 2^{13054355235221} is an apocalyptic number.

It is an amenable number.

13054355235221 is a deficient number, since it is larger than the sum of its proper divisors (29074288279).

13054355235221 is an equidigital number, since it uses as much as digits as its factorization.

13054355235221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29074288278.

The product of its (nonzero) digits is 540000, while the sum is 41.

The spelling of 13054355235221 in words is "thirteen trillion, fifty-four billion, three hundred fifty-five million, two hundred thirty-five thousand, two hundred twenty-one".