1121222222213 has 2 divisors, whose sum is σ = 1121222222214. Its totient is φ = 1121222222212.

The previous prime is 1121222222209. The next prime is 1121222222227. The reversal of 1121222222213 is 3122222221211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 742730265124 + 378491957089 = 861818^2 + 615217^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121222222213 - 2² = 1121222222209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121222222713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560611111106 + 560611111107.

It is an arithmetic number, because the mean of its divisors is an integer number (560611111107).

Almost surely, 2^{1121222222213} is an apocalyptic number.

It is an amenable number.

1121222222213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121222222213 is an equidigital number, since it uses as much as digits as its factorization.

1121222222213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 23.

Adding to 1121222222213 its reverse (3122222221211), we get a palindrome (4243444443424).

The spelling of 1121222222213 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred thirteen".