1012020010019 has 2 divisors, whose sum is σ = 1012020010020. Its totient is φ = 1012020010018.

The previous prime is 1012020010009. The next prime is 1012020010021. The reversal of 1012020010019 is 9100100202101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1012020010019 - 2⁴ = 1012020010003 is a prime.

It is a super-2 number, since 2×1012020010019² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 1012020010021, 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 = 1012020009979 and 1012020010006.

It is not a weakly prime, because it can be changed into another prime (1012020010009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506010005009 + 506010005010.

It is an arithmetic number, because the mean of its divisors is an integer number (506010005010).

Almost surely, 2^{1012020010019} is an apocalyptic number.

1012020010019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012020010019 is an equidigital number, since it uses as much as digits as its factorization.

1012020010019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 1012020010019 in words is "one trillion, twelve billion, twenty million, ten thousand, nineteen".