221541216230064 has 80 divisors (see below), whose sum is σ = 585793485388800. Its totient is φ = 72114886717440.

The previous prime is 221541216230063. The next prime is 221541216230119. The reversal of 221541216230064 is 460032612145122.

It is not an unprimeable number, because it can be changed into a prime (221541216230063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108342172 + ... + 110368059.

It is an arithmetic number, because the mean of its divisors is an integer number (7322418567360).

Almost surely, 2^{221541216230064} is an apocalyptic number.

221541216230064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

221541216230064 is an abundant number, since it is smaller than the sum of its proper divisors (364252269158736).

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

221541216230064 is a wasteful number, since it uses less digits than its factorization.

221541216230064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218710738 (or 218710732 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

Adding to 221541216230064 its reverse (460032612145122), we get a palindrome (681573828375186).

The spelling of 221541216230064 in words is "two hundred twenty-one trillion, five hundred forty-one billion, two hundred sixteen million, two hundred thirty thousand, sixty-four".