221365542832 has 80 divisors (see below), whose sum is σ = 491851376640. Its totient is φ = 94545432576.

The previous prime is 221365542799. The next prime is 221365542877. The reversal of 221365542832 is 238245563122.

221365542832 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47368848 + ... + 47373520.

It is an arithmetic number, because the mean of its divisors is an integer number (6148142208).

Almost surely, 2^221365542832 is an apocalyptic number.

It is an amenable number.

221365542832 is an abundant number, since it is smaller than the sum of its proper divisors (270485833808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221365542832 is a wasteful number, since it uses less digits than its factorization.

221365542832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6050 (or 6044 counting only the distinct ones).

The product of its digits is 691200, while the sum is 43.

The spelling of 221365542832 in words is "two hundred twenty-one billion, three hundred sixty-five million, five hundred forty-two thousand, eight hundred thirty-two".