111334021 has 2 divisors, whose sum is σ = 111334022. Its totient is φ = 111334020.

The previous prime is 111334001. The next prime is 111334063. The reversal of 111334021 is 120433111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107952100 + 3381921 = 10390^2 + 1839^2 .

It is a cyclic number.

It is not a de Polignac number, because 111334021 - 2¹³ = 111325829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111333986 and 111334004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111334001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55667010 + 55667011.

It is an arithmetic number, because the mean of its divisors is an integer number (55667011).

Almost surely, 2^111334021 is an apocalyptic number.

It is an amenable number.

111334021 is a deficient number, since it is larger than the sum of its proper divisors (1).

111334021 is an equidigital number, since it uses as much as digits as its factorization.

111334021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 111334021 is about 10551.4937805033. The cubic root of 111334021 is about 481.0711337089.

Adding to 111334021 its reverse (120433111), we get a palindrome (231767132).

The spelling of 111334021 in words is "one hundred eleven million, three hundred thirty-four thousand, twenty-one".