221535205055343 has 24 divisors (see below), whose sum is σ = 322442675620208. Its totient is φ = 146562967579392.

The previous prime is 221535205055293. The next prime is 221535205055363. The reversal of 221535205055343 is 343550502535122.

221535205055343 is a `hidden beast` number, since 2 + 2 + 1 + 5 + 3 + 5 + 2 + 0 + 50 + 553 + 43 = 666.

It is not a de Polignac number, because 221535205055343 - 2¹⁶ = 221535204989807 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 (221535205055363) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98496346 + ... + 100720407.

Almost surely, 2^{221535205055343} is an apocalyptic number.

221535205055343 is a deficient number, since it is larger than the sum of its proper divisors (100907470564865).

221535205055343 is a wasteful number, since it uses less digits than its factorization.

221535205055343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199217703 (or 199217700 counting only the distinct ones).

The product of its (nonzero) digits is 2700000, while the sum is 45.

The spelling of 221535205055343 in words is "two hundred twenty-one trillion, five hundred thirty-five billion, two hundred five million, fifty-five thousand, three hundred forty-three".