1122212213 has 2 divisors, whose sum is σ = 1122212214. Its totient is φ = 1122212212.

The previous prime is 1122212209. The next prime is 1122212239. The reversal of 1122212213 is 3122122211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1119772369 + 2439844 = 33463^2 + 1562^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122212213 - 2² = 1122212209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1122212191 and 1122212200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122212263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561106106 + 561106107.

It is an arithmetic number, because the mean of its divisors is an integer number (561106107).

Almost surely, 2^1122212213 is an apocalyptic number.

It is an amenable number.

1122212213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122212213 is an equidigital number, since it uses as much as digits as its factorization.

1122212213 is an evil number, because the sum of its binary digits is even.

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

The square root of 1122212213 is about 33499.4360101778. The cubic root of 1122212213 is about 1039.1821149121.

Adding to 1122212213 its reverse (3122122211), we get a palindrome (4244334424).

The spelling of 1122212213 in words is "one billion, one hundred twenty-two million, two hundred twelve thousand, two hundred thirteen".