221434000441 has 4 divisors (see below), whose sum is σ = 225064066084. Its totient is φ = 217803934800.

The previous prime is 221434000399. The next prime is 221434000493. The reversal of 221434000441 is 144000434122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24031510441 + 197402490000 = 155021^2 + 444300^2 .

It is a cyclic number.

It is not a de Polignac number, because 221434000441 - 2⁹ = 221433999929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221434000841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1815032730 + ... + 1815032851.

It is an arithmetic number, because the mean of its divisors is an integer number (56266016521).

Almost surely, 2^221434000441 is an apocalyptic number.

It is an amenable number.

221434000441 is a deficient number, since it is larger than the sum of its proper divisors (3630065643).

221434000441 is an equidigital number, since it uses as much as digits as its factorization.

221434000441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3630065642.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 221434000441 its reverse (144000434122), we get a palindrome (365434434563).

The spelling of 221434000441 in words is "two hundred twenty-one billion, four hundred thirty-four million, four hundred forty-one", and thus it is an aban number.