221236141 has 8 divisors (see below), whose sum is σ = 253352000. Its totient is φ = 189247968.

The previous prime is 221236139. The next prime is 221236187. The reversal of 221236141 is 141632122.

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

It is not a de Polignac number, because 221236141 - 2¹ = 221236139 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 (221236441) 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, 28176 + ... + 35161.

It is an arithmetic number, because the mean of its divisors is an integer number (31669000).

Almost surely, 2^221236141 is an apocalyptic number.

It is an amenable number.

221236141 is a deficient number, since it is larger than the sum of its proper divisors (32115859).

221236141 is an equidigital number, since it uses as much as digits as its factorization.

221236141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63843.

The product of its digits is 576, while the sum is 22.

The square root of 221236141 is about 14874.0089081592. The cubic root of 221236141 is about 604.8096215870.

Adding to 221236141 its reverse (141632122), we get a palindrome (362868263).

The spelling of 221236141 in words is "two hundred twenty-one million, two hundred thirty-six thousand, one hundred forty-one".