1121222221243 has 2 divisors, whose sum is σ = 1121222221244. Its totient is φ = 1121222221242.

The previous prime is 1121222221193. The next prime is 1121222221247. The reversal of 1121222221243 is 3421222221211.

It is a strong prime.

It is an emirp because it is prime and its reverse (3421222221211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1121222221243 - 2²⁹ = 1120685350331 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121222221247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560611110621 + 560611110622.

It is an arithmetic number, because the mean of its divisors is an integer number (560611110622).

Almost surely, 2^{1121222221243} is an apocalyptic number.

1121222221243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121222221243 is an equidigital number, since it uses as much as digits as its factorization.

1121222221243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 25.

Adding to 1121222221243 its reverse (3421222221211), we get a palindrome (4542444442454).

The spelling of 1121222221243 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred forty-three".