221440233343 has 16 divisors (see below), whose sum is σ = 267973864704. Its totient is φ = 178632478080.

The previous prime is 221440233331. The next prime is 221440233353. The reversal of 221440233343 is 343332044122.

It is a happy number.

It is not a de Polignac number, because 221440233343 - 2²⁹ = 220903362431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221440233353) 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, 4369596 + ... + 4419982.

It is an arithmetic number, because the mean of its divisors is an integer number (16748366544).

Almost surely, 2^221440233343 is an apocalyptic number.

221440233343 is a deficient number, since it is larger than the sum of its proper divisors (46533631361).

221440233343 is a wasteful number, since it uses less digits than its factorization.

221440233343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87342.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 221440233343 its reverse (343332044122), we get a palindrome (564772277465).

The spelling of 221440233343 in words is "two hundred twenty-one billion, four hundred forty million, two hundred thirty-three thousand, three hundred forty-three".