2000121719 has 4 divisors (see below), whose sum is σ = 2000507160. Its totient is φ = 1999736280.

The previous prime is 2000121713. The next prime is 2000121727. The reversal of 2000121719 is 9171210002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9171210002 = 2 ⋅4585605001.

It is a cyclic number.

It is not a de Polignac number, because 2000121719 - 2⁴ = 2000121703 is a prime.

It is a super-2 number, since 2×2000121719² = 8000973781631029922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2000121694 and 2000121703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000121713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184829 + ... + 195350.

It is an arithmetic number, because the mean of its divisors is an integer number (500126790).

Almost surely, 2^2000121719 is an apocalyptic number.

2000121719 is a deficient number, since it is larger than the sum of its proper divisors (385441).

2000121719 is an equidigital number, since it uses as much as digits as its factorization.

2000121719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385440.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 2000121719 is about 44722.7203890819. The cubic root of 2000121719 is about 1259.9466087648.

The spelling of 2000121719 in words is "two billion, one hundred twenty-one thousand, seven hundred nineteen".