1220101000189 has 2 divisors, whose sum is σ = 1220101000190. Its totient is φ = 1220101000188.

The previous prime is 1220101000073. The next prime is 1220101000199. The reversal of 1220101000189 is 9810001010221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 668661092089 + 551439908100 = 817717^2 + 742590^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220101000189 - 2¹⁹ = 1220100475901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220101000199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610050500094 + 610050500095.

It is an arithmetic number, because the mean of its divisors is an integer number (610050500095).

Almost surely, 2^{1220101000189} is an apocalyptic number.

It is an amenable number.

1220101000189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220101000189 is an equidigital number, since it uses as much as digits as its factorization.

1220101000189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 1220101000189 in words is "one trillion, two hundred twenty billion, one hundred one million, one hundred eighty-nine", and thus it is an aban number.