221534524531532 has 12 divisors (see below), whose sum is σ = 387686445828360. Its totient is φ = 110766968580576.

The previous prime is 221534524531499. The next prime is 221534524531543. The reversal of 221534524531532 is 235135425435122.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 71719682 + ... + 74744777.

It is an arithmetic number, because the mean of its divisors is an integer number (32307203819030).

Almost surely, 2^{221534524531532} is an apocalyptic number.

It is an amenable number.

221534524531532 is a deficient number, since it is larger than the sum of its proper divisors (166151921296828).

221534524531532 is a wasteful number, since it uses less digits than its factorization.

221534524531532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146842600 (or 146842598 counting only the distinct ones).

The product of its digits is 4320000, while the sum is 47.

Adding to 221534524531532 its reverse (235135425435122), we get a palindrome (456669949966654).

The spelling of 221534524531532 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, five hundred twenty-four million, five hundred thirty-one thousand, five hundred thirty-two".