2021070019 has 2 divisors, whose sum is σ = 2021070020. Its totient is φ = 2021070018.

The previous prime is 2021070011. The next prime is 2021070091. The reversal of 2021070019 is 9100701202.

Together with next prime (2021070091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021070019 - 2³ = 2021070011 is a prime.

It is a super-2 number, since 2×2021070019² = 8169448043401320722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2021070011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010535009 + 1010535010.

It is an arithmetic number, because the mean of its divisors is an integer number (1010535010).

Almost surely, 2^2021070019 is an apocalyptic number.

2021070019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021070019 is an equidigital number, since it uses as much as digits as its factorization.

2021070019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 2021070019 is about 44956.3123376462. The cubic root of 2021070019 is about 1264.3300298139.

The spelling of 2021070019 in words is "two billion, twenty-one million, seventy thousand, nineteen".