1121122212251 has 2 divisors, whose sum is σ = 1121122212252. Its totient is φ = 1121122212250.

The previous prime is 1121122212229. The next prime is 1121122212257. The reversal of 1121122212251 is 1522122211211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121122212251 - 2²² = 1121118017947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121122212257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560561106125 + 560561106126.

It is an arithmetic number, because the mean of its divisors is an integer number (560561106126).

Almost surely, 2^{1121122212251} is an apocalyptic number.

1121122212251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121122212251 is an equidigital number, since it uses as much as digits as its factorization.

1121122212251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320, while the sum is 23.

Adding to 1121122212251 its reverse (1522122211211), we get a palindrome (2643244423462).

The spelling of 1121122212251 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred twelve thousand, two hundred fifty-one".