221011112200110 has 128 divisors (see below), whose sum is σ = 577449478545408. Its totient is φ = 53916848640000.

The previous prime is 221011112200079. The next prime is 221011112200111. The reversal of 221011112200110 is 11002211110122.

It is a happy number.

It is a super-2 number, since 2×221011112200110² (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 221011112200110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011112200111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13834566 + ... + 25167785.

It is an arithmetic number, because the mean of its divisors is an integer number (4511324051136).

Almost surely, 2^{221011112200110} is an apocalyptic number.

221011112200110 is an abundant number, since it is smaller than the sum of its proper divisors (356438366345298).

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

221011112200110 is a wasteful number, since it uses less digits than its factorization.

221011112200110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39002690.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 221011112200110 its reverse (11002211110122), we get a palindrome (232013323310232).

The spelling of 221011112200110 in words is "two hundred twenty-one trillion, eleven billion, one hundred twelve million, two hundred thousand, one hundred ten".