1012101100189 has 2 divisors, whose sum is σ = 1012101100190. Its totient is φ = 1012101100188.

The previous prime is 1012101100187. The next prime is 1012101100247. The reversal of 1012101100189 is 9810011012101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 796809740164 + 215291360025 = 892642^2 + 463995^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012101100189 - 2¹ = 1012101100187 is a prime.

Together with 1012101100187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012101100187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506050550094 + 506050550095.

It is an arithmetic number, because the mean of its divisors is an integer number (506050550095).

Almost surely, 2^{1012101100189} is an apocalyptic number.

It is an amenable number.

1012101100189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012101100189 is an equidigital number, since it uses as much as digits as its factorization.

1012101100189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 25.

The spelling of 1012101100189 in words is "one trillion, twelve billion, one hundred one million, one hundred thousand, one hundred eighty-nine".