221221200441 has 16 divisors (see below), whose sum is σ = 295633800000. Its totient is φ = 147144864768.

The previous prime is 221221200427. The next prime is 221221200509. The reversal of 221221200441 is 144002122122.

221221200441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221221200441 - 2⁶ = 221221200377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221221200401) by changing a digit.

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, 6043105 + ... + 6079601.

It is an arithmetic number, because the mean of its divisors is an integer number (18477112500).

Almost surely, 2^221221200441 is an apocalyptic number.

It is an amenable number.

221221200441 is a deficient number, since it is larger than the sum of its proper divisors (74412599559).

221221200441 is a wasteful number, since it uses less digits than its factorization.

221221200441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41048.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221221200441 its reverse (144002122122), we get a palindrome (365223322563).

The spelling of 221221200441 in words is "two hundred twenty-one billion, two hundred twenty-one million, two hundred thousand, four hundred forty-one".