102020001019 has 4 divisors (see below), whose sum is σ = 102028719744. Its totient is φ = 102011282296.

The previous prime is 102020001011. The next prime is 102020001029. The reversal of 102020001019 is 910100020201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102020001019 - 2³ = 102020001011 is a prime.

It is a super-2 number, since 2×102020001019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102020000993 and 102020001011.

It is not an unprimeable number, because it can be changed into a prime (102020001011) 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 in 3 ways as a sum of consecutive naturals, for example, 4341787 + ... + 4365220.

It is an arithmetic number, because the mean of its divisors is an integer number (25507179936).

Almost surely, 2^102020001019 is an apocalyptic number.

102020001019 is a deficient number, since it is larger than the sum of its proper divisors (8718725).

102020001019 is an equidigital number, since it uses as much as digits as its factorization.

102020001019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8718724.

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

The spelling of 102020001019 in words is "one hundred two billion, twenty million, one thousand, nineteen".