110121111222221 has 8 divisors (see below), whose sum is σ = 120251181921600. Its totient is φ = 100010883954240.

The previous prime is 110121111222169. The next prime is 110121111222233. The reversal of 110121111222221 is 122222111121011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110121111222221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110121111222193 and 110121111222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110121111222271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4960846241 + ... + 4960868438.

It is an arithmetic number, because the mean of its divisors is an integer number (15031397740200).

Almost surely, 2^{110121111222221} is an apocalyptic number.

110121111222221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

110121111222221 is a deficient number, since it is larger than the sum of its proper divisors (10130070699379).

110121111222221 is a wasteful number, since it uses less digits than its factorization.

110121111222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9921715699.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 110121111222221 its reverse (122222111121011), we get a palindrome (232343222343232).

The spelling of 110121111222221 in words is "one hundred ten trillion, one hundred twenty-one billion, one hundred eleven million, two hundred twenty-two thousand, two hundred twenty-one".