13241246655221 has 8 divisors (see below), whose sum is σ = 14751521473080. Its totient is φ = 11801217177792.

The previous prime is 13241246655157. The next prime is 13241246655227. The reversal of 13241246655221 is 12255664214231.

It can be written as a sum of positive squares in 4 ways, for example, as 38844468100 + 13202402187121 = 197090^2 + 3633511^2 .

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 13241246655221 - 2⁶ = 13241246655157 is a prime.

It is a super-2 number, since 2×13241246655221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13241246655227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17561334710 + ... + 17561335463.

It is an arithmetic number, because the mean of its divisors is an integer number (1843940184135).

Almost surely, 2^{13241246655221} is an apocalyptic number.

It is an amenable number.

13241246655221 is a deficient number, since it is larger than the sum of its proper divisors (1510274817859).

13241246655221 is a wasteful number, since it uses less digits than its factorization.

13241246655221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35122670215.

The product of its digits is 691200, while the sum is 44.

The spelling of 13241246655221 in words is "thirteen trillion, two hundred forty-one billion, two hundred forty-six million, six hundred fifty-five thousand, two hundred twenty-one".