220434440221 has 8 divisors (see below), whose sum is σ = 221067595584. Its totient is φ = 219801700800.

The previous prime is 220434440203. The next prime is 220434440251. The reversal of 220434440221 is 122044434022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220434440221 - 2²³ = 220426051613 is a prime.

It is a super-4 number, since 4×220434440221⁴ (a number of 46 digits) contains 4444 as substring.

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 220434440221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220434440251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 973440 + ... + 1178326.

It is an arithmetic number, because the mean of its divisors is an integer number (27633449448).

Almost surely, 2^220434440221 is an apocalyptic number.

It is an amenable number.

220434440221 is a deficient number, since it is larger than the sum of its proper divisors (633155363).

220434440221 is a wasteful number, since it uses less digits than its factorization.

220434440221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207971.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 220434440221 its reverse (122044434022), we get a palindrome (342478874243).

The spelling of 220434440221 in words is "two hundred twenty billion, four hundred thirty-four million, four hundred forty thousand, two hundred twenty-one".