1020201019 has 2 divisors, whose sum is σ = 1020201020. Its totient is φ = 1020201018.

The previous prime is 1020200999. The next prime is 1020201031. The reversal of 1020201019 is 9101020201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020201019 - 2¹⁵ = 1020168251 is a prime.

It is a super-2 number, since 2×1020201019² = 2081620238337276722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020200993 and 1020201011.

It is not a weakly prime, because it can be changed into another prime (1020201079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510100509 + 510100510.

It is an arithmetic number, because the mean of its divisors is an integer number (510100510).

Almost surely, 2^1020201019 is an apocalyptic number.

1020201019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020201019 is an equidigital number, since it uses as much as digits as its factorization.

1020201019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1020201019 is about 31940.5857648228. The cubic root of 1020201019 is about 1006.6888327624.

The spelling of 1020201019 in words is "one billion, twenty million, two hundred one thousand, nineteen".