1210100189 has 2 divisors, whose sum is σ = 1210100190. Its totient is φ = 1210100188.

The previous prime is 1210100183. The next prime is 1210100191. The reversal of 1210100189 is 9810010121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1120040089 + 90060100 = 33467^2 + 9490^2 .

It is an emirp because it is prime and its reverse (9810010121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1210100189 - 2²⁸ = 941664733 is a prime.

Together with 1210100191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210100183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605050094 + 605050095.

It is an arithmetic number, because the mean of its divisors is an integer number (605050095).

Almost surely, 2^1210100189 is an apocalyptic number.

It is an amenable number.

1210100189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210100189 is an equidigital number, since it uses as much as digits as its factorization.

1210100189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 1210100189 is about 34786.4943476631. The cubic root of 1210100189 is about 1065.6316468702.

The spelling of 1210100189 in words is "one billion, two hundred ten million, one hundred thousand, one hundred eighty-nine".