221541141 has 4 divisors (see below), whose sum is σ = 295388192. Its totient is φ = 147694092.

The previous prime is 221541139. The next prime is 221541143. The reversal of 221541141 is 141145122.

221541141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (221541139) and next prime (221541143).

It is not a de Polignac number, because 221541141 - 2¹ = 221541139 is a prime.

It is a super-3 number, since 3×221541141³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221541143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36923521 + ... + 36923526.

It is an arithmetic number, because the mean of its divisors is an integer number (73847048).

Almost surely, 2^221541141 is an apocalyptic number.

It is an amenable number.

221541141 is a deficient number, since it is larger than the sum of its proper divisors (73847051).

221541141 is an equidigital number, since it uses as much as digits as its factorization.

221541141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73847050.

The product of its digits is 320, while the sum is 21.

The square root of 221541141 is about 14884.2581608893. The cubic root of 221541141 is about 605.0874276586.

Adding to 221541141 its reverse (141145122), we get a palindrome (362686263).

The spelling of 221541141 in words is "two hundred twenty-one million, five hundred forty-one thousand, one hundred forty-one".