110110220001221 has 16 divisors (see below), whose sum is σ = 123053335852608. Its totient is φ = 97656085756800.

The previous prime is 110110220001161. The next prime is 110110220001247. The reversal of 110110220001221 is 122100022011011.

It is a cyclic number.

It is not a de Polignac number, because 110110220001221 - 2¹⁰ = 110110220000197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110110220001196 and 110110220001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110110220001121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13450886 + ... + 20028648.

It is an arithmetic number, because the mean of its divisors is an integer number (7690833490788).

Almost surely, 2^{110110220001221} is an apocalyptic number.

110110220001221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

110110220001221 is a deficient number, since it is larger than the sum of its proper divisors (12943115851387).

110110220001221 is a wasteful number, since it uses less digits than its factorization.

110110220001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6614932.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 110110220001221 its reverse (122100022011011), we get a palindrome (232210242012232).

The spelling of 110110220001221 in words is "one hundred ten trillion, one hundred ten billion, two hundred twenty million, one thousand, two hundred twenty-one".