221120021110 has 32 divisors (see below), whose sum is σ = 406613338560. Its totient is φ = 86546448768.

The previous prime is 221120021107. The next prime is 221120021153. The reversal of 221120021110 is 11120021122.

It is a congruent number.

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, 361570 + ... + 756949.

It is an arithmetic number, because the mean of its divisors is an integer number (12706666830).

Almost surely, 2^221120021110 is an apocalyptic number.

221120021110 is a deficient number, since it is larger than the sum of its proper divisors (185493317450).

221120021110 is a wasteful number, since it uses less digits than its factorization.

221120021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118952.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221120021110 its reverse (11120021122), we get a palindrome (232240042232).

The spelling of 221120021110 in words is "two hundred twenty-one billion, one hundred twenty million, twenty-one thousand, one hundred ten".