221041440242 has 8 divisors (see below), whose sum is σ = 378928183296. Its totient is φ = 94732045812.

The previous prime is 221041440239. The next prime is 221041440253. The reversal of 221041440242 is 242044140122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7894337138 + ... + 7894337165.

It is an arithmetic number, because the mean of its divisors is an integer number (47366022912).

Almost surely, 2^221041440242 is an apocalyptic number.

221041440242 is a deficient number, since it is larger than the sum of its proper divisors (157886743054).

221041440242 is a wasteful number, since it uses less digits than its factorization.

221041440242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15788674312.

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

Adding to 221041440242 its reverse (242044140122), we get a palindrome (463085580364).

The spelling of 221041440242 in words is "two hundred twenty-one billion, forty-one million, four hundred forty thousand, two hundred forty-two".