101219784947 has 2 divisors, whose sum is σ = 101219784948. Its totient is φ = 101219784946.

The previous prime is 101219784929. The next prime is 101219785003. The reversal of 101219784947 is 749487912101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101219784947 is a prime.

It is not a weakly prime, because it can be changed into another prime (101219784907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50609892473 + 50609892474.

It is an arithmetic number, because the mean of its divisors is an integer number (50609892474).

Almost surely, 2^101219784947 is an apocalyptic number.

101219784947 is a deficient number, since it is larger than the sum of its proper divisors (1).

101219784947 is an equidigital number, since it uses as much as digits as its factorization.

101219784947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 53.

The spelling of 101219784947 in words is "one hundred one billion, two hundred nineteen million, seven hundred eighty-four thousand, nine hundred forty-seven".