221043325304242 has 32 divisors (see below), whose sum is σ = 395512788344832. Its totient is φ = 90589720622544.

The previous prime is 221043325304239. The next prime is 221043325304251. The reversal of 221043325304242 is 242403523340122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90894078 + ... + 93294265.

It is an arithmetic number, because the mean of its divisors is an integer number (12359774635776).

Almost surely, 2^{221043325304242} is an apocalyptic number.

221043325304242 is a deficient number, since it is larger than the sum of its proper divisors (174469463040590).

221043325304242 is a wasteful number, since it uses less digits than its factorization.

221043325304242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184192102.

The product of its (nonzero) digits is 276480, while the sum is 37.

Adding to 221043325304242 its reverse (242403523340122), we get a palindrome (463446848644364).

The spelling of 221043325304242 in words is "two hundred twenty-one trillion, forty-three billion, three hundred twenty-five million, three hundred four thousand, two hundred forty-two".