101020112189 has 2 divisors, whose sum is σ = 101020112190. Its totient is φ = 101020112188.

The previous prime is 101020112113. The next prime is 101020112191. The reversal of 101020112189 is 981211020101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60806628100 + 40213484089 = 246590^2 + 200533^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101020112189 is a prime.

Together with 101020112191, 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 (101020111189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50510056094 + 50510056095.

It is an arithmetic number, because the mean of its divisors is an integer number (50510056095).

Almost surely, 2^101020112189 is an apocalyptic number.

It is an amenable number.

101020112189 is a deficient number, since it is larger than the sum of its proper divisors (1).

101020112189 is an equidigital number, since it uses as much as digits as its factorization.

101020112189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 26.

The spelling of 101020112189 in words is "one hundred one billion, twenty million, one hundred twelve thousand, one hundred eighty-nine".