2112012311947 has 2 divisors, whose sum is σ = 2112012311948. Its totient is φ = 2112012311946.

The previous prime is 2112012311921. The next prime is 2112012311963. The reversal of 2112012311947 is 7491132102112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2112012311947 - 2¹⁹ = 2112011787659 is a prime.

It is not a weakly prime, because it can be changed into another prime (2112012311447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056006155973 + 1056006155974.

It is an arithmetic number, because the mean of its divisors is an integer number (1056006155974).

Almost surely, 2^{2112012311947} is an apocalyptic number.

2112012311947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112012311947 is an equidigital number, since it uses as much as digits as its factorization.

2112012311947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 34.

The spelling of 2112012311947 in words is "two trillion, one hundred twelve billion, twelve million, three hundred eleven thousand, nine hundred forty-seven".