221144141 has 8 divisors (see below), whose sum is σ = 226954464. Its totient is φ = 215364240.

The previous prime is 221144129. The next prime is 221144159. The reversal of 221144141 is 141441122.

221144141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221144141 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 (221144101) 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, 7511 + ... + 22331.

It is an arithmetic number, because the mean of its divisors is an integer number (28369308).

Almost surely, 2^221144141 is an apocalyptic number.

It is an amenable number.

221144141 is a deficient number, since it is larger than the sum of its proper divisors (5810323).

221144141 is a wasteful number, since it uses less digits than its factorization.

221144141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15211.

The product of its digits is 256, while the sum is 20.

The square root of 221144141 is about 14870.9159435456. The cubic root of 221144141 is about 604.7257742258.

Adding to 221144141 its reverse (141441122), we get a palindrome (362585263).

The spelling of 221144141 in words is "two hundred twenty-one million, one hundred forty-four thousand, one hundred forty-one".