221220100211110 has 128 divisors (see below), whose sum is σ = 557886287960064. Its totient is φ = 60880447964160.

The previous prime is 221220100211069. The next prime is 221220100211119. The reversal of 221220100211110 is 11112001022122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221220100211119) 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 63 ways as a sum of consecutive naturals, for example, 480202599 + ... + 480663058.

It is an arithmetic number, because the mean of its divisors is an integer number (4358486624688).

Almost surely, 2^{221220100211110} is an apocalyptic number.

221220100211110 is an abundant number, since it is smaller than the sum of its proper divisors (336666187748954).

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

221220100211110 is a wasteful number, since it uses less digits than its factorization.

221220100211110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960865718.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221220100211110 its reverse (11112001022122), we get a palindrome (232332101233232).

The spelling of 221220100211110 in words is "two hundred twenty-one trillion, two hundred twenty billion, one hundred million, two hundred eleven thousand, one hundred ten".