111214121 has 2 divisors, whose sum is σ = 111214122. Its totient is φ = 111214120.

The previous prime is 111214093. The next prime is 111214199. The reversal of 111214121 is 121412111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103815721 + 7398400 = 10189^2 + 2720^2 .

It is a cyclic number.

It is not a de Polignac number, because 111214121 - 2⁶ = 111214057 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 111214096 and 111214105.

It is not a weakly prime, because it can be changed into another prime (111214321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55607060 + 55607061.

It is an arithmetic number, because the mean of its divisors is an integer number (55607061).

Almost surely, 2^111214121 is an apocalyptic number.

It is an amenable number.

111214121 is a deficient number, since it is larger than the sum of its proper divisors (1).

111214121 is an equidigital number, since it uses as much as digits as its factorization.

111214121 is an evil number, because the sum of its binary digits is even.

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

The square root of 111214121 is about 10545.8105899926. The cubic root of 111214121 is about 480.8983768495.

Adding to 111214121 its reverse (121412111), we get a palindrome (232626232).

It can be divided in two parts, 11 and 1214121, that multiplied together give a palindrome (13355331).

The spelling of 111214121 in words is "one hundred eleven million, two hundred fourteen thousand, one hundred twenty-one".