1122111231211 has 2 divisors, whose sum is σ = 1122111231212. Its totient is φ = 1122111231210.

The previous prime is 1122111231203. The next prime is 1122111231259. The reversal of 1122111231211 is 1121321112211.

It is a m-pointer prime, because the next prime (1122111231259) can be obtained adding 1122111231211 to its product of digits (48).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1122111231211 - 2³ = 1122111231203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1122111211211) 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, 561055615605 + 561055615606.

It is an arithmetic number, because the mean of its divisors is an integer number (561055615606).

Almost surely, 2^{1122111231211} is an apocalyptic number.

1122111231211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122111231211 is an equidigital number, since it uses as much as digits as its factorization.

1122111231211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48, while the sum is 19.

Adding to 1122111231211 its reverse (1121321112211), we get a palindrome (2243432343422).

The spelling of 1122111231211 in words is "one trillion, one hundred twenty-two billion, one hundred eleven million, two hundred thirty-one thousand, two hundred eleven".