210966968819 has 2 divisors, whose sum is σ = 210966968820. Its totient is φ = 210966968818.

The previous prime is 210966968809. The next prime is 210966968857. The reversal of 210966968819 is 918869669012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210966968819 - 2¹² = 210966964723 is a prime.

It is a super-2 number, since 2×210966968819² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210966968809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105483484409 + 105483484410.

It is an arithmetic number, because the mean of its divisors is an integer number (105483484410).

Almost surely, 2^210966968819 is an apocalyptic number.

210966968819 is a deficient number, since it is larger than the sum of its proper divisors (1).

210966968819 is an equidigital number, since it uses as much as digits as its factorization.

210966968819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20155392, while the sum is 65.

The spelling of 210966968819 in words is "two hundred ten billion, nine hundred sixty-six million, nine hundred sixty-eight thousand, eight hundred nineteen".