2002120019 has 4 divisors (see below), whose sum is σ = 2002223496. Its totient is φ = 2002016544.

The previous prime is 2002120013. The next prime is 2002120051. The reversal of 2002120019 is 9100212002.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2002120019 - 2¹² = 2002115923 is a prime.

It is a super-2 number, since 2×2002120019² = 8016969140961120722, 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 = 2002119979 and 2002120006.

It is not an unprimeable number, because it can be changed into a prime (2002120013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13094 + ... + 64619.

It is an arithmetic number, because the mean of its divisors is an integer number (500555874).

Almost surely, 2^2002120019 is an apocalyptic number.

2002120019 is a deficient number, since it is larger than the sum of its proper divisors (103477).

2002120019 is an equidigital number, since it uses as much as digits as its factorization.

2002120019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103476.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 2002120019 is about 44745.0558050831. The cubic root of 2002120019 is about 1260.3660687845.

The spelling of 2002120019 in words is "two billion, two million, one hundred twenty thousand, nineteen".