2000109252181 has 2 divisors, whose sum is σ = 2000109252182. Its totient is φ = 2000109252180.

The previous prime is 2000109252179. The next prime is 2000109252217. The reversal of 2000109252181 is 1812529010002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1841812693956 + 158296558225 = 1357134^2 + 397865^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000109252181 - 2¹ = 2000109252179 is a prime.

It is a super-2 number, since 2×2000109252181² (a number of 25 digits) contains 22 as substring.

Together with 2000109252179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2000109282181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000054626090 + 1000054626091.

It is an arithmetic number, because the mean of its divisors is an integer number (1000054626091).

Almost surely, 2^{2000109252181} is an apocalyptic number.

It is an amenable number.

2000109252181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000109252181 is an equidigital number, since it uses as much as digits as its factorization.

2000109252181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 31.

The spelling of 2000109252181 in words is "two trillion, one hundred nine million, two hundred fifty-two thousand, one hundred eighty-one".