221442141 has 8 divisors (see below), whose sum is σ = 295618240. Its totient is φ = 147447072.

The previous prime is 221442103. The next prime is 221442149. The reversal of 221442141 is 141244122.

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

It is not a de Polignac number, because 221442141 - 2⁹ = 221441629 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 (221442149) 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, 42376 + ... + 47313.

It is an arithmetic number, because the mean of its divisors is an integer number (36952280).

Almost surely, 2^221442141 is an apocalyptic number.

It is an amenable number.

221442141 is a deficient number, since it is larger than the sum of its proper divisors (74176099).

221442141 is an equidigital number, since it uses as much as digits as its factorization.

221442141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90515.

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

The square root of 221442141 is about 14880.9321280624. The cubic root of 221442141 is about 604.9972825049.

Adding to 221442141 its reverse (141244122), we get a palindrome (362686263).

The spelling of 221442141 in words is "two hundred twenty-one million, four hundred forty-two thousand, one hundred forty-one".