102020020019 has 2 divisors, whose sum is σ = 102020020020. Its totient is φ = 102020020018.

The previous prime is 102020020001. The next prime is 102020020021. The reversal of 102020020019 is 910020020201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102020020019 is a prime.

It is a super-2 number, since 2×102020020019² (a number of 23 digits) contains 22 as substring.

Together with 102020020021, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 102020019979 and 102020020006.

It is not a weakly prime, because it can be changed into another prime (102020020919) 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 as a sum of consecutive naturals, namely, 51010010009 + 51010010010.

It is an arithmetic number, because the mean of its divisors is an integer number (51010010010).

Almost surely, 2^102020020019 is an apocalyptic number.

102020020019 is a deficient number, since it is larger than the sum of its proper divisors (1).

102020020019 is an equidigital number, since it uses as much as digits as its factorization.

102020020019 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 102020020019 in words is "one hundred two billion, twenty million, twenty thousand, nineteen".