221440140242 has 16 divisors (see below), whose sum is σ = 333949174272. Its totient is φ = 110123922480.

The previous prime is 221440140241. The next prime is 221440140263. The reversal of 221440140242 is 242041044122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (221440140241) 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, 2751608 + ... + 2830940.

It is an arithmetic number, because the mean of its divisors is an integer number (20871823392).

Almost surely, 2^221440140242 is an apocalyptic number.

221440140242 is a deficient number, since it is larger than the sum of its proper divisors (112509034030).

221440140242 is a wasteful number, since it uses less digits than its factorization.

221440140242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86833.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 221440140242 its reverse (242041044122), we get a palindrome (463481184364).

The spelling of 221440140242 in words is "two hundred twenty-one billion, four hundred forty million, one hundred forty thousand, two hundred forty-two".