1112111212001 has 2 divisors, whose sum is σ = 1112111212002. Its totient is φ = 1112111212000.

The previous prime is 1112111211917. The next prime is 1112111212073. The reversal of 1112111212001 is 1002121112111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1103920056976 + 8191155025 = 1050676^2 + 90505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112111212001 is a prime.

It is not a weakly prime, because it can be changed into another prime (1112111262001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556055606000 + 556055606001.

It is an arithmetic number, because the mean of its divisors is an integer number (556055606001).

Almost surely, 2^{1112111212001} is an apocalyptic number.

It is an amenable number.

1112111212001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112111212001 is an equidigital number, since it uses as much as digits as its factorization.

1112111212001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1112111212001 its reverse (1002121112111), we get a palindrome (2114232324112).

The spelling of 1112111212001 in words is "one trillion, one hundred twelve billion, one hundred eleven million, two hundred twelve thousand, one".