221334041455 has 16 divisors (see below), whose sum is σ = 272113025184. Its totient is φ = 172726865920.

The previous prime is 221334041447. The next prime is 221334041471. The reversal of 221334041455 is 554140433122.

It is not a de Polignac number, because 221334041455 - 2³ = 221334041447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221334041455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1681752 + ... + 1808578.

It is an arithmetic number, because the mean of its divisors is an integer number (17007064074).

Almost surely, 2^221334041455 is an apocalyptic number.

221334041455 is a deficient number, since it is larger than the sum of its proper divisors (50778983729).

221334041455 is a wasteful number, since it uses less digits than its factorization.

221334041455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135386.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 221334041455 its reverse (554140433122), we get a palindrome (775474474577).

The spelling of 221334041455 in words is "two hundred twenty-one billion, three hundred thirty-four million, forty-one thousand, four hundred fifty-five".