1011111212047 has 2 divisors, whose sum is σ = 1011111212048. Its totient is φ = 1011111212046.

The previous prime is 1011111211997. The next prime is 1011111212051. The reversal of 1011111212047 is 7402121111101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011111212047 - 2¹⁹ = 1011110687759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011111216047) 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, 505555606023 + 505555606024.

It is an arithmetic number, because the mean of its divisors is an integer number (505555606024).

Almost surely, 2^{1011111212047} is an apocalyptic number.

1011111212047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011111212047 is an equidigital number, since it uses as much as digits as its factorization.

1011111212047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 22.

Adding to 1011111212047 its reverse (7402121111101), we get a palindrome (8413232323148).

The spelling of 1011111212047 in words is "one trillion, eleven billion, one hundred eleven million, two hundred twelve thousand, forty-seven".