13724684441221 has 16 divisors (see below), whose sum is σ = 14924522156544. Its totient is φ = 12545441190144.

The previous prime is 13724684441191. The next prime is 13724684441227. The reversal of 13724684441221 is 12214448642731.

It is a cyclic number.

It is not a de Polignac number, because 13724684441221 - 2¹¹ = 13724684439173 is a prime.

It is a super-2 number, since 2×13724684441221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13724684441227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35864925 + ... + 36245581.

It is an arithmetic number, because the mean of its divisors is an integer number (932782634784).

Almost surely, 2^{13724684441221} is an apocalyptic number.

It is an amenable number.

13724684441221 is a deficient number, since it is larger than the sum of its proper divisors (1199837715323).

13724684441221 is a wasteful number, since it uses less digits than its factorization.

13724684441221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407700.

The product of its digits is 2064384, while the sum is 49.

The spelling of 13724684441221 in words is "thirteen trillion, seven hundred twenty-four billion, six hundred eighty-four million, four hundred forty-one thousand, two hundred twenty-one".