111110100022121 has 8 divisors (see below), whose sum is σ = 111818389757640. Its totient is φ = 110401817655168.

The previous prime is 111110100022111. The next prime is 111110100022177. The reversal of 111110100022121 is 121220001011111.

It can be written as a sum of positive squares in 4 ways, for example, as 36012901155625 + 75097198866496 = 6001075^2 + 8665864^2 .

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-111110100022121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111110100022096 and 111110100022105.

It is not an unprimeable number, because it can be changed into a prime (111110100022111) 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, 30180365 + ... + 33661173.

It is an arithmetic number, because the mean of its divisors is an integer number (13977298719705).

Almost surely, 2^{111110100022121} is an apocalyptic number.

It is an amenable number.

111110100022121 is a deficient number, since it is larger than the sum of its proper divisors (708289735519).

111110100022121 is a wasteful number, since it uses less digits than its factorization.

111110100022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3684283.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111110100022121 its reverse (121220001011111), we get a palindrome (232330101033232).

The spelling of 111110100022121 in words is "one hundred eleven trillion, one hundred ten billion, one hundred million, twenty-two thousand, one hundred twenty-one".