221010210068939 has 2 divisors, whose sum is σ = 221010210068940. Its totient is φ = 221010210068938.

The previous prime is 221010210068929. The next prime is 221010210068959. The reversal of 221010210068939 is 939860012010122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221010210068939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221010210068939.

It is not a weakly prime, because it can be changed into another prime (221010210068909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110505105034469 + 110505105034470.

It is an arithmetic number, because the mean of its divisors is an integer number (110505105034470).

Almost surely, 2^{221010210068939} is an apocalyptic number.

221010210068939 is a deficient number, since it is larger than the sum of its proper divisors (1).

221010210068939 is an equidigital number, since it uses as much as digits as its factorization.

221010210068939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 221010210068939 in words is "two hundred twenty-one trillion, ten billion, two hundred ten million, sixty-eight thousand, nine hundred thirty-nine".