213119999947 has 2 divisors, whose sum is σ = 213119999948. Its totient is φ = 213119999946.

The previous prime is 213119999933. The next prime is 213120000019. The reversal of 213119999947 is 749999911312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213119999947 is a prime.

It is not a weakly prime, because it can be changed into another prime (213119991947) 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, 106559999973 + 106559999974.

It is an arithmetic number, because the mean of its divisors is an integer number (106559999974).

Almost surely, 2^213119999947 is an apocalyptic number.

213119999947 is a deficient number, since it is larger than the sum of its proper divisors (1).

213119999947 is an equidigital number, since it uses as much as digits as its factorization.

213119999947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9920232, while the sum is 64.

The spelling of 213119999947 in words is "two hundred thirteen billion, one hundred nineteen million, nine hundred ninety-nine thousand, nine hundred forty-seven".