221230040244 has 24 divisors (see below), whose sum is σ = 519971339328. Its totient is φ = 73205073600.

The previous prime is 221230040219. The next prime is 221230040287. The reversal of 221230040244 is 442040032122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67282432 + ... + 67285719.

It is an arithmetic number, because the mean of its divisors is an integer number (21665472472).

Almost surely, 2^221230040244 is an apocalyptic number.

It is an amenable number.

221230040244 is an abundant number, since it is smaller than the sum of its proper divisors (298741299084).

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

221230040244 is a wasteful number, since it uses less digits than its factorization.

221230040244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134568295 (or 134568293 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 221230040244 its reverse (442040032122), we get a palindrome (663270072366).

The spelling of 221230040244 in words is "two hundred twenty-one billion, two hundred thirty million, forty thousand, two hundred forty-four".