221233221143 has 12 divisors (see below), whose sum is σ = 247375396824. Its totient is φ = 196215700800.

The previous prime is 221233221119. The next prime is 221233221161. The reversal of 221233221143 is 341122332122.

It is not a de Polignac number, because 221233221143 - 2¹⁶ = 221233155607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221233221103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5963696 + ... + 6000677.

It is an arithmetic number, because the mean of its divisors is an integer number (20614616402).

Almost surely, 2^221233221143 is an apocalyptic number.

221233221143 is a deficient number, since it is larger than the sum of its proper divisors (26142175681).

221233221143 is a wasteful number, since it uses less digits than its factorization.

221233221143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11964466 (or 11964425 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

Adding to 221233221143 its reverse (341122332122), we get a palindrome (562355553265).

The spelling of 221233221143 in words is "two hundred twenty-one billion, two hundred thirty-three million, two hundred twenty-one thousand, one hundred forty-three".