110120112121221 has 12 divisors (see below), whose sum is σ = 159087969326572. Its totient is φ = 73401599549376.

The previous prime is 110120112121207. The next prime is 110120112121291. The reversal of 110120112121221 is 122121211021011.

It is a happy number.

110120112121221 is a `hidden beast` number, since 1 + 101 + 201 + 121 + 21 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 93050910764100 + 17069201357121 = 9646290^2 + 4131489^2 .

It is not a de Polignac number, because 110120112121221 - 2¹⁵ = 110120112088453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110120112121194 and 110120112121203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110120112121291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 983985226 + ... + 984097131.

Almost surely, 2^{110120112121221} is an apocalyptic number.

It is an amenable number.

110120112121221 is a deficient number, since it is larger than the sum of its proper divisors (48967857205351).

110120112121221 is a wasteful number, since it uses less digits than its factorization.

110120112121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968088580 (or 1968088577 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 110120112121221 its reverse (122121211021011), we get a palindrome (232241323142232).

The spelling of 110120112121221 in words is "one hundred ten trillion, one hundred twenty billion, one hundred twelve million, one hundred twenty-one thousand, two hundred twenty-one".