111010112222121 has 48 divisors (see below), whose sum is σ = 187071426256000. Its totient is φ = 63408315856032.

The previous prime is 111010112222089. The next prime is 111010112222147. The reversal of 111010112222121 is 121222211010111.

It is a happy number.

It is not a de Polignac number, because 111010112222121 - 2⁵ = 111010112222089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111010112222094 and 111010112222103.

It is not an unprimeable number, because it can be changed into a prime (111010112222161) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 144990 + ... + 14901048.

Almost surely, 2^{111010112222121} is an apocalyptic number.

It is an amenable number.

111010112222121 is a deficient number, since it is larger than the sum of its proper divisors (76061314033879).

111010112222121 is a wasteful number, since it uses less digits than its factorization.

111010112222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14758523 (or 14758506 counting only the distinct ones).

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

Adding to 111010112222121 its reverse (121222211010111), we get a palindrome (232232323232232).

The spelling of 111010112222121 in words is "one hundred eleven trillion, ten billion, one hundred twelve million, two hundred twenty-two thousand, one hundred twenty-one".