1112121221231 has 2 divisors, whose sum is σ = 1112121221232. Its totient is φ = 1112121221230.

The previous prime is 1112121221219. The next prime is 1112121221327. The reversal of 1112121221231 is 1321221212111.

It is a m-pointer prime, because the next prime (1112121221327) can be obtained adding 1112121221231 to its product of digits (96).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1112121221231 - 2³⁸ = 837243314287 is a prime.

It is a super-2 number, since 2×1112121221231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112121271231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556060610615 + 556060610616.

It is an arithmetic number, because the mean of its divisors is an integer number (556060610616).

Almost surely, 2^{1112121221231} is an apocalyptic number.

1112121221231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112121221231 is an equidigital number, since it uses as much as digits as its factorization.

1112121221231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 20.

Adding to 1112121221231 its reverse (1321221212111), we get a palindrome (2433342433342).

The spelling of 1112121221231 in words is "one trillion, one hundred twelve billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred thirty-one".