1111251111263 has 2 divisors, whose sum is σ = 1111251111264. Its totient is φ = 1111251111262.

The previous prime is 1111251111241. The next prime is 1111251111319. The reversal of 1111251111263 is 3621111521111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111251111263 - 2²⁰ = 1111250062687 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111251111203) 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, 555625555631 + 555625555632.

It is an arithmetic number, because the mean of its divisors is an integer number (555625555632).

Almost surely, 2^{1111251111263} is an apocalyptic number.

1111251111263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111251111263 is an equidigital number, since it uses as much as digits as its factorization.

1111251111263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 26.

Adding to 1111251111263 its reverse (3621111521111), we get a palindrome (4732362632374).

The spelling of 1111251111263 in words is "one trillion, one hundred eleven billion, two hundred fifty-one million, one hundred eleven thousand, two hundred sixty-three".