1115452213 has 2 divisors, whose sum is σ = 1115452214. Its totient is φ = 1115452212.

The previous prime is 1115452211. The next prime is 1115452223. The reversal of 1115452213 is 3122545111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 929457169 + 185995044 = 30487^2 + 13638^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115452213 - 2¹ = 1115452211 is a prime.

Together with 1115452211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115452211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557726106 + 557726107.

It is an arithmetic number, because the mean of its divisors is an integer number (557726107).

Almost surely, 2^1115452213 is an apocalyptic number.

It is an amenable number.

1115452213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115452213 is an equidigital number, since it uses as much as digits as its factorization.

1115452213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 25.

The square root of 1115452213 is about 33398.3863831773. The cubic root of 1115452213 is about 1037.0912970551.

Adding to 1115452213 its reverse (3122545111), we get a palindrome (4237997324).

The spelling of 1115452213 in words is "one billion, one hundred fifteen million, four hundred fifty-two thousand, two hundred thirteen".