201000121119989 has 2 divisors, whose sum is σ = 201000121119990. Its totient is φ = 201000121119988.

The previous prime is 201000121119971. The next prime is 201000121120027. The reversal of 201000121119989 is 989911121000102.

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., 198656114189764 + 2344006930225 = 14094542^2 + 1531015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201000121119989 is a prime.

It is a super-3 number, since 3×201000121119989³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201000121110989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500060559994 + 100500060559995.

It is an arithmetic number, because the mean of its divisors is an integer number (100500060559995).

Almost surely, 2^{201000121119989} is an apocalyptic number.

It is an amenable number.

201000121119989 is a deficient number, since it is larger than the sum of its proper divisors (1).

201000121119989 is an equidigital number, since it uses as much as digits as its factorization.

201000121119989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 44.

The spelling of 201000121119989 in words is "two hundred one trillion, one hundred twenty-one million, one hundred nineteen thousand, nine hundred eighty-nine".