1111211229847 has 2 divisors, whose sum is σ = 1111211229848. Its totient is φ = 1111211229846.

The previous prime is 1111211229839. The next prime is 1111211229853. The reversal of 1111211229847 is 7489221121111.

It is a strong prime.

It is an emirp because it is prime and its reverse (7489221121111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1111211229847 - 2³ = 1111211229839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111211209847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555605614923 + 555605614924.

It is an arithmetic number, because the mean of its divisors is an integer number (555605614924).

Almost surely, 2^{1111211229847} is an apocalyptic number.

1111211229847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111211229847 is an equidigital number, since it uses as much as digits as its factorization.

1111211229847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 40.

The spelling of 1111211229847 in words is "one trillion, one hundred eleven billion, two hundred eleven million, two hundred twenty-nine thousand, eight hundred forty-seven".