100000212101689 has 2 divisors, whose sum is σ = 100000212101690. Its totient is φ = 100000212101688.

The previous prime is 100000212101663. The next prime is 100000212101711. The reversal of 100000212101689 is 986101212000001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65265926885289 + 34734285216400 = 8078733^2 + 5893580^2 .

It is an emirp because it is prime and its reverse (986101212000001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100000212101689 - 2²⁵ = 100000178547257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100000212101689.

It is not a weakly prime, because it can be changed into another prime (100000212101659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000106050844 + 50000106050845.

It is an arithmetic number, because the mean of its divisors is an integer number (50000106050845).

Almost surely, 2^{100000212101689} is an apocalyptic number.

It is an amenable number.

100000212101689 is a deficient number, since it is larger than the sum of its proper divisors (1).

100000212101689 is an equidigital number, since it uses as much as digits as its factorization.

100000212101689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 31.

The spelling of 100000212101689 in words is "one hundred trillion, two hundred twelve million, one hundred one thousand, six hundred eighty-nine".