221540332141 has 8 divisors (see below), whose sum is σ = 221905268064. Its totient is φ = 221175684240.

The previous prime is 221540332129. The next prime is 221540332147. The reversal of 221540332141 is 141233045122.

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

It is a cyclic number.

It is not a de Polignac number, because 221540332141 - 2⁵ = 221540332109 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 (221540332147) 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, 1495566 + ... + 1637008.

It is an arithmetic number, because the mean of its divisors is an integer number (27738158508).

Almost surely, 2^221540332141 is an apocalyptic number.

It is an amenable number.

221540332141 is a deficient number, since it is larger than the sum of its proper divisors (364935923).

221540332141 is a wasteful number, since it uses less digits than its factorization.

221540332141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144011.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 221540332141 its reverse (141233045122), we get a palindrome (362773377263).

The spelling of 221540332141 in words is "two hundred twenty-one billion, five hundred forty million, three hundred thirty-two thousand, one hundred forty-one".