221441643151 has 8 divisors (see below), whose sum is σ = 225512557200. Its totient is φ = 217381318080.

The previous prime is 221441643133. The next prime is 221441643161. The reversal of 221441643151 is 151346144122.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-221441643151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221441643161) 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, 2605030 + ... + 2688691.

It is an arithmetic number, because the mean of its divisors is an integer number (28189069650).

Almost surely, 2^221441643151 is an apocalyptic number.

221441643151 is a deficient number, since it is larger than the sum of its proper divisors (4070914049).

221441643151 is an equidigital number, since it uses as much as digits as its factorization.

221441643151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5294489.

The product of its digits is 23040, while the sum is 34.

Adding to 221441643151 its reverse (151346144122), we get a palindrome (372787787273).

The spelling of 221441643151 in words is "two hundred twenty-one billion, four hundred forty-one million, six hundred forty-three thousand, one hundred fifty-one".