1121302213 has 2 divisors, whose sum is σ = 1121302214. Its totient is φ = 1121302212.

The previous prime is 1121302211. The next prime is 1121302267. The reversal of 1121302213 is 3122031211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1092765249 + 28536964 = 33057^2 + 5342^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121302213 - 2¹ = 1121302211 is a prime.

Together with 1121302211, 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 (1121302211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560651106 + 560651107.

It is an arithmetic number, because the mean of its divisors is an integer number (560651107).

Almost surely, 2^1121302213 is an apocalyptic number.

It is an amenable number.

1121302213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121302213 is an equidigital number, since it uses as much as digits as its factorization.

1121302213 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 1121302213 is about 33485.8509373735. The cubic root of 1121302213 is about 1038.9011486091.

Adding to 1121302213 its reverse (3122031211), we get a palindrome (4243333424).

The spelling of 1121302213 in words is "one billion, one hundred twenty-one million, three hundred two thousand, two hundred thirteen".