221210120020110 has 32 divisors (see below), whose sum is σ = 571743079437600. Its totient is φ = 54451721851008.

The previous prime is 221210120020081. The next prime is 221210120020157. The reversal of 221210120020110 is 11020021012122.

It is a super-2 number, since 2×221210120020110² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 221210120020110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283602717585 + ... + 283602718364.

It is an arithmetic number, because the mean of its divisors is an integer number (17866971232425).

Almost surely, 2^{221210120020110} is an apocalyptic number.

221210120020110 is an abundant number, since it is smaller than the sum of its proper divisors (350532959417490).

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

221210120020110 is a wasteful number, since it uses less digits than its factorization.

221210120020110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567205435972.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221210120020110 its reverse (11020021012122), we get a palindrome (232230141032232).

The spelling of 221210120020110 in words is "two hundred twenty-one trillion, two hundred ten billion, one hundred twenty million, twenty thousand, one hundred ten".