221240140404 has 48 divisors (see below), whose sum is σ = 543442536000. Its totient is φ = 69859431936.

The previous prime is 221240140391. The next prime is 221240140409. The reversal of 221240140404 is 404041042122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221240140409) 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 15 ways as a sum of consecutive naturals, for example, 3260794 + ... + 3327950.

It is an arithmetic number, because the mean of its divisors is an integer number (11321719500).

Almost surely, 2^221240140404 is an apocalyptic number.

It is an amenable number.

221240140404 is an abundant number, since it is smaller than the sum of its proper divisors (322202395596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221240140404 is a wasteful number, since it uses less digits than its factorization.

221240140404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81632 (or 81630 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 221240140404 its reverse (404041042122), we get a palindrome (625281182526).

The spelling of 221240140404 in words is "two hundred twenty-one billion, two hundred forty million, one hundred forty thousand, four hundred four".