221232341143 has 16 divisors (see below), whose sum is σ = 252598540032. Its totient is φ = 191794680000.

The previous prime is 221232341129. The next prime is 221232341149. The reversal of 221232341143 is 341143232122.

It is a de Polignac number, because none of the positive numbers 2^k-221232341143 is a prime.

It is a super-2 number, since 2×221232341143² (a number of 23 digits) contains 22 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 (221232341149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1237158 + ... + 1404643.

It is an arithmetic number, because the mean of its divisors is an integer number (15787408752).

Almost surely, 2^221232341143 is an apocalyptic number.

221232341143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

221232341143 is a deficient number, since it is larger than the sum of its proper divisors (31366198889).

221232341143 is a wasteful number, since it uses less digits than its factorization.

221232341143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642166.

The product of its digits is 6912, while the sum is 28.

Adding to 221232341143 its reverse (341143232122), we get a palindrome (562375573265).

The spelling of 221232341143 in words is "two hundred twenty-one billion, two hundred thirty-two million, three hundred forty-one thousand, one hundred forty-three".