111001213 has 2 divisors, whose sum is σ = 111001214. Its totient is φ = 111001212.

The previous prime is 111001201. The next prime is 111001229. The reversal of 111001213 is 312100111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76685049 + 34316164 = 8757^2 + 5858^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111001213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111001213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111001283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500606 + 55500607.

It is an arithmetic number, because the mean of its divisors is an integer number (55500607).

Almost surely, 2^111001213 is an apocalyptic number.

It is an amenable number.

111001213 is a deficient number, since it is larger than the sum of its proper divisors (1).

111001213 is an equidigital number, since it uses as much as digits as its factorization.

111001213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 111001213 is about 10535.7113191279. The cubic root of 111001213 is about 480.5913039802.

Adding to 111001213 its reverse (312100111), we get a palindrome (423101324).

The spelling of 111001213 in words is "one hundred eleven million, one thousand, two hundred thirteen".