221211102222110 has 64 divisors (see below), whose sum is σ = 534619279240704. Its totient is φ = 63645152284800.

The previous prime is 221211102222029. The next prime is 221211102222119. The reversal of 221211102222110 is 11222201112122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221211102222119) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 11049495596 + ... + 11049515615.

It is an arithmetic number, because the mean of its divisors is an integer number (8353426238136).

Almost surely, 2^{221211102222110} is an apocalyptic number.

221211102222110 is an abundant number, since it is smaller than the sum of its proper divisors (313408177018594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221211102222110 is a wasteful number, since it uses less digits than its factorization.

221211102222110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22099011249.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 221211102222110 its reverse (11222201112122), we get a palindrome (232433303334232).

The spelling of 221211102222110 in words is "two hundred twenty-one trillion, two hundred eleven billion, one hundred two million, two hundred twenty-two thousand, one hundred ten".