201023220320189 has 2 divisors, whose sum is σ = 201023220320190. Its totient is φ = 201023220320188.

The previous prime is 201023220320177. The next prime is 201023220320239. The reversal of 201023220320189 is 981023022320102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171282918000100 + 29740302320089 = 13087510^2 + 5453467^2 .

It is a cyclic number.

It is not a de Polignac number, because 201023220320189 - 2³² = 201018925352893 is a prime.

It is a super-4 number, since 4×201023220320189⁴ (a number of 58 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201023220320159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100511610160094 + 100511610160095.

It is an arithmetic number, because the mean of its divisors is an integer number (100511610160095).

Almost surely, 2^{201023220320189} is an apocalyptic number.

It is an amenable number.

201023220320189 is a deficient number, since it is larger than the sum of its proper divisors (1).

201023220320189 is an equidigital number, since it uses as much as digits as its factorization.

201023220320189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 201023220320189 in words is "two hundred one trillion, twenty-three billion, two hundred twenty million, three hundred twenty thousand, one hundred eighty-nine".