221034420255 has 32 divisors (see below), whose sum is σ = 402579694080. Its totient is φ = 102508714880.

The previous prime is 221034420247. The next prime is 221034420377. The reversal of 221034420255 is 552024430122.

It is not a de Polignac number, because 221034420255 - 2³ = 221034420247 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29118000 + ... + 29125589.

It is an arithmetic number, because the mean of its divisors is an integer number (12580615440).

Almost surely, 2^221034420255 is an apocalyptic number.

221034420255 is a deficient number, since it is larger than the sum of its proper divisors (181545273825).

221034420255 is a wasteful number, since it uses less digits than its factorization.

221034420255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58243631.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 221034420255 its reverse (552024430122), we get a palindrome (773058850377).

The spelling of 221034420255 in words is "two hundred twenty-one billion, thirty-four million, four hundred twenty thousand, two hundred fifty-five".