221210404042 has 16 divisors (see below), whose sum is σ = 346266648000. Its totient is φ = 105788862432.

The previous prime is 221210404031. The next prime is 221210404057. The reversal of 221210404042 is 240404012122.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 525334 + ... + 847582.

It is an arithmetic number, because the mean of its divisors is an integer number (21641665500).

Almost surely, 2^221210404042 is an apocalyptic number.

221210404042 is a deficient number, since it is larger than the sum of its proper divisors (125056243958).

221210404042 is a wasteful number, since it uses less digits than its factorization.

221210404042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337197.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 221210404042 its reverse (240404012122), we get a palindrome (461614416164).

The spelling of 221210404042 in words is "two hundred twenty-one billion, two hundred ten million, four hundred four thousand, forty-two".