100123198169 has 2 divisors, whose sum is σ = 100123198170. Its totient is φ = 100123198168.

The previous prime is 100123198157. The next prime is 100123198183. The reversal of 100123198169 is 961891321001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95612060944 + 4511137225 = 309212^2 + 67165^2 .

It is a cyclic number.

It is not a de Polignac number, because 100123198169 - 2¹⁶ = 100123132633 is a prime.

It is a super-2 number, since 2×100123198169² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100123198129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50061599084 + 50061599085.

It is an arithmetic number, because the mean of its divisors is an integer number (50061599085).

Almost surely, 2^100123198169 is an apocalyptic number.

It is an amenable number.

100123198169 is a deficient number, since it is larger than the sum of its proper divisors (1).

100123198169 is an equidigital number, since it uses as much as digits as its factorization.

100123198169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 100123198169 in words is "one hundred billion, one hundred twenty-three million, one hundred ninety-eight thousand, one hundred sixty-nine".