1112113213261 has 2 divisors, whose sum is σ = 1112113213262. Its totient is φ = 1112113213260.

The previous prime is 1112113213249. The next prime is 1112113213271. The reversal of 1112113213261 is 1623123112111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1029425335236 + 82687878025 = 1014606^2 + 287555^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112113213261 - 2¹⁷ = 1112113082189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112113213271) 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, 556056606630 + 556056606631.

It is an arithmetic number, because the mean of its divisors is an integer number (556056606631).

Almost surely, 2^{1112113213261} is an apocalyptic number.

It is an amenable number.

1112113213261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112113213261 is an equidigital number, since it uses as much as digits as its factorization.

1112113213261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 25.

Adding to 1112113213261 its reverse (1623123112111), we get a palindrome (2735236325372).

The spelling of 1112113213261 in words is "one trillion, one hundred twelve billion, one hundred thirteen million, two hundred thirteen thousand, two hundred sixty-one".