1121222213 has 2 divisors, whose sum is σ = 1121222214. Its totient is φ = 1121222212.

The previous prime is 1121222209. The next prime is 1121222227. The reversal of 1121222213 is 3122221211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 983324164 + 137898049 = 31358^2 + 11743^2 .

It is an emirp because it is prime and its reverse (3122221211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1121222213 - 2² = 1121222209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121222191 and 1121222200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121222413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560611106 + 560611107.

It is an arithmetic number, because the mean of its divisors is an integer number (560611107).

Almost surely, 2^1121222213 is an apocalyptic number.

It is an amenable number.

1121222213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121222213 is an equidigital number, since it uses as much as digits as its factorization.

1121222213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 17.

The square root of 1121222213 is about 33484.6563816922. The cubic root of 1121222213 is about 1038.8764410065.

Adding to 1121222213 its reverse (3122221211), we get a palindrome (4243443424).

The spelling of 1121222213 in words is "one billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred thirteen".