2111101748947 has 2 divisors, whose sum is σ = 2111101748948. Its totient is φ = 2111101748946.

The previous prime is 2111101748911. The next prime is 2111101749007. The reversal of 2111101748947 is 7498471011112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2111101748947 - 2³⁹ = 1561345935059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2111101748897 and 2111101748906.

It is not a weakly prime, because it can be changed into another prime (2111101748047) 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, 1055550874473 + 1055550874474.

It is an arithmetic number, because the mean of its divisors is an integer number (1055550874474).

Almost surely, 2^{2111101748947} is an apocalyptic number.

2111101748947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111101748947 is an equidigital number, since it uses as much as digits as its factorization.

2111101748947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 46.

The spelling of 2111101748947 in words is "two trillion, one hundred eleven billion, one hundred one million, seven hundred forty-eight thousand, nine hundred forty-seven".