221122221105 has 32 divisors (see below), whose sum is σ = 370853239680. Its totient is φ = 112379742720.

The previous prime is 221122221091. The next prime is 221122221113. The reversal of 221122221105 is 501122221122.

It is not a de Polignac number, because 221122221105 - 2¹¹ = 221122219057 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4154350 + ... + 4207239.

It is an arithmetic number, because the mean of its divisors is an integer number (11589163740).

Almost surely, 2^221122221105 is an apocalyptic number.

It is an amenable number.

221122221105 is a deficient number, since it is larger than the sum of its proper divisors (149731018575).

221122221105 is a wasteful number, since it uses less digits than its factorization.

221122221105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8361681.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 221122221105 its reverse (501122221122), we get a palindrome (722244442227).

The spelling of 221122221105 in words is "two hundred twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred five".