221221010110 has 8 divisors (see below), whose sum is σ = 398197818216. Its totient is φ = 88488404040.

The previous prime is 221221010089. The next prime is 221221010111. The reversal of 221221010110 is 11010122122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221221010111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11061050496 + ... + 11061050515.

It is an arithmetic number, because the mean of its divisors is an integer number (49774727277).

Almost surely, 2^221221010110 is an apocalyptic number.

221221010110 is a deficient number, since it is larger than the sum of its proper divisors (176976808106).

221221010110 is a wasteful number, since it uses less digits than its factorization.

221221010110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22122101018.

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

Adding to 221221010110 its reverse (11010122122), we get a palindrome (232231132232).

The spelling of 221221010110 in words is "two hundred twenty-one billion, two hundred twenty-one million, ten thousand, one hundred ten".