100000212121189 has 2 divisors, whose sum is σ = 100000212121190. Its totient is φ = 100000212121188.

The previous prime is 100000212121141. The next prime is 100000212121261. The reversal of 100000212121189 is 981121212000001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52371028189089 + 47629183932100 = 7236783^2 + 6901390^2 .

It is a cyclic number.

It is not a de Polignac number, because 100000212121189 - 2²¹ = 100000210024037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100000212121129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000106060594 + 50000106060595.

It is an arithmetic number, because the mean of its divisors is an integer number (50000106060595).

Almost surely, 2^{100000212121189} is an apocalyptic number.

It is an amenable number.

100000212121189 is a deficient number, since it is larger than the sum of its proper divisors (1).

100000212121189 is an equidigital number, since it uses as much as digits as its factorization.

100000212121189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 28.

The spelling of 100000212121189 in words is "one hundred trillion, two hundred twelve million, one hundred twenty-one thousand, one hundred eighty-nine".