20112200189 has 2 divisors, whose sum is σ = 20112200190. Its totient is φ = 20112200188.

The previous prime is 20112200179. The next prime is 20112200203. The reversal of 20112200189 is 98100221102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14111064100 + 6001136089 = 118790^2 + 77467^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20112200189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20112200159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056100094 + 10056100095.

It is an arithmetic number, because the mean of its divisors is an integer number (10056100095).

Almost surely, 2^20112200189 is an apocalyptic number.

It is an amenable number.

20112200189 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112200189 is an equidigital number, since it uses as much as digits as its factorization.

20112200189 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 26.

The spelling of 20112200189 in words is "twenty billion, one hundred twelve million, two hundred thousand, one hundred eighty-nine".