2001222200189 has 2 divisors, whose sum is σ = 2001222200190. Its totient is φ = 2001222200188.

The previous prime is 2001222200179. The next prime is 2001222200227. The reversal of 2001222200189 is 9810022221002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1832999177689 + 168223022500 = 1353883^2 + 410150^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001222200189 - 2³⁶ = 1932502723453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001222200149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000611100094 + 1000611100095.

It is an arithmetic number, because the mean of its divisors is an integer number (1000611100095).

Almost surely, 2^{2001222200189} is an apocalyptic number.

It is an amenable number.

2001222200189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001222200189 is an equidigital number, since it uses as much as digits as its factorization.

2001222200189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 2001222200189 in words is "two trillion, one billion, two hundred twenty-two million, two hundred thousand, one hundred eighty-nine".