1321112112211 has 2 divisors, whose sum is σ = 1321112112212. Its totient is φ = 1321112112210.

The previous prime is 1321112112161. The next prime is 1321112112223. The reversal of 1321112112211 is 1122112111231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321112112211 - 2⁹ = 1321112111699 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321112112241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660556056105 + 660556056106.

It is an arithmetic number, because the mean of its divisors is an integer number (660556056106).

Almost surely, 2^{1321112112211} is an apocalyptic number.

1321112112211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321112112211 is an equidigital number, since it uses as much as digits as its factorization.

1321112112211 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 1321112112211 its reverse (1122112111231), we get a palindrome (2443224223442).

The spelling of 1321112112211 in words is "one trillion, three hundred twenty-one billion, one hundred twelve million, one hundred twelve thousand, two hundred eleven".