1112021213 has 2 divisors, whose sum is σ = 1112021214. Its totient is φ = 1112021212.

The previous prime is 1112021179. The next prime is 1112021231. The reversal of 1112021213 is 3121202111.

Together with next prime (1112021231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1080962884 + 31058329 = 32878^2 + 5573^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112021213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112020213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556010606 + 556010607.

It is an arithmetic number, because the mean of its divisors is an integer number (556010607).

Almost surely, 2^1112021213 is an apocalyptic number.

It is an amenable number.

1112021213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112021213 is an equidigital number, since it uses as much as digits as its factorization.

1112021213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1112021213 is about 33346.9820673476. The cubic root of 1112021213 is about 1036.0268812934.

Adding to 1112021213 its reverse (3121202111), we get a palindrome (4233223324).

The spelling of 1112021213 in words is "one billion, one hundred twelve million, twenty-one thousand, two hundred thirteen".